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A Septenquadragintillion (1 Septenquadragintillion) is 10 to the power of 144 (10^144). This is a gigantic number!

How many zeros in a Septenquadragintillion?

There are 144 zeros in a Septenquadragintillion.

What's before Septenquadragintillion?

A Sesquadragintillion is smaller than a Septenquadragintillion.

What's after Septenquadragintillion?

A Octoquadragintillion is larger than a Septenquadragintillion.


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

Is Septenquadragintillion the largest number?

Septenquadragintillion 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.

Septenquadragintillion written out

Septenquadragintillion is written out as:


Big Numbers

This is just one of many really big numbers!

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