Sustillion 

A number so incomprehensibly large that it arouses suspicion, particularly when cited in a statistic, report, or government budget. The word is a blend of the prefix "sus-" (as in suspicious) and a large number suffix like "-illion." The term often implies that the number has been fabricated or exaggerated to an absurd degree to mislead or impress others.

The mathematical definition: Graham's Number to the power of Graham's Number: g(64)^g(64)

Dude, I've got a sustillion followers on TikTok. Just kidding, it's like 20.

Sustillion by nokavec September 10, 2025

shitillion 

An inexact but mind-blowingly large number, somewhere between a centillion and a googolplex. If every atom in the observable universe were replaced by a universe the size of the observable universe, and then every atom in the resulting universe were replaced by a universe the size of the observable universe, the number of atoms in that resulting universe would be dwarfed by a shitillion. Not a term to be used lightly.

I could list a shitillion reasons why I haven't seen the Battlefield Earth movie.

shitillion by Honky '98 February 27, 2012

sextillion 

1,000,000,000,000,000,000,000
This number is humourous due to the mention of sex. Contains 22 digits.

Math teacher:... and after quadrillion and quintillion comes... sextillion.
Class: *uncontrolable laughter*

sextillion by rustyhookj July 8, 2004

69 sextillion 

This number only intended for mature audiences.

Math teacher: What's 58,000,000,000,000,000,000,000 plus 11,000,000,000,000,000,000,000?
Everyone: uhh 69 sextillion

69 sextillion by peoplearecrazy May 11, 2022

septillion 

10 followed by 24 zeroes in America, and 42 in Great Britain. Okay, you're basically swapping the zeroes around.

Guy 1: Holy shit! I got a septillion dollars! I'm a septillionaire!
Guy 2: Whoa dude! That's almost like infinity! Build me a Megameter skyscraper!

septillion by Yottatron April 24, 2016

Foot Pon Shoulder Doggy Stillion 

When you put a girls leg on your shoulder and begin to doggy her.

She got it foot pon shoulder doggy stillion

Foot Pon Shoulder Doggy Stillion by Trendz November 20, 2006

Sextillion 

It's after quadrillion. It's basically 1,000,000, 000, 000 ,000,000,000. I wonder why it's named that though....

Sextillion is a funny word but it's included in math just like 69...

Sextillion by Petergriffin#awesome December 13, 2017