Create Free Account | Log In


A Quinquadragintillion (1 Quinquadragintillion) is 10 to the power of 138 (10^138). This is an immensely massive number!

How many zeros in a Quinquadragintillion?

There are 138 zeros in a Quinquadragintillion.

What's before Quinquadragintillion?

A Quattuorquadragintillion is smaller than a Quinquadragintillion.

What's after Quinquadragintillion?

A Sesquadragintillion is larger than a Quinquadragintillion.


A Quinquadragintillionaire is someone whos assets, net worth or wealth is 1 or more Quinquadragintillion. It is unlikely anyone will ever be a true Quinquadragintillionaire. If you want to be a Quinquadragintillionaire, play Tap Tales!

Is Quinquadragintillion the largest number?

Quinquadragintillion is not the largest number. Infinity best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.

Quinquadragintillion written out

Quinquadragintillion is written out as:


Big Numbers

This is just one of many really big numbers!

Play Now

Choose your device:

FREE to download and play!