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What is this number called 1,000,000,000,000,000,000,000,000?

Published in Large Numbers 1 min read

The number 1,000,000,000,000,000,000,000,000 is called a septillion.

A septillion is a large number equal to 10 to the power of 24, or 1024. This means a "1" followed by 24 zeros.

Here's a table showing the names of some other large numbers:

Number Scientific Notation Name
1,000,000,000,000,000 1015 Quadrillion
1,000,000,000,000,000,000 1018 Quintillion
1,000,000,000,000,000,000,000 1021 Sextillion
1,000,000,000,000,000,000,000,000 1024 Septillion

These names are part of a system for naming large numbers that, while standardized, is not always consistently used across different regions and contexts.

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