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A Septenseptuagintillion (1 Septenseptuagintillion) is 10 to the power of 234 (10^234). This is an immensely colossal number!

How many zeros in a Septenseptuagintillion?

There are 234 zeros in a Septenseptuagintillion.

What's before Septenseptuagintillion?

A Seseptuagintillion is smaller than a Septenseptuagintillion.

What's after Septenseptuagintillion?

A Octoseptuagintillion is larger than a Septenseptuagintillion.


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

Is Septenseptuagintillion the largest number?

Septenseptuagintillion 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.

Septenseptuagintillion written out

Septenseptuagintillion is written out as:


Big Numbers

This is just one of many really big numbers!

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