81215321688320400

81,215,321,688,320,400 is an even composite number composed of six prime numbers multiplied together.

What does the number 81215321688320400 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 3375 divisors.

81215321688320400 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three thousand, three hundred seventy-five divisors.

Prime factorization of 81215321688320400:

24 × 34 × 52 × 74 × 792 × 4092

(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 5 × 7 × 7 × 7 × 7 × 79 × 79 × 409 × 409)

See below for interesting mathematical facts about the number 81215321688320400 from the Numbermatics database.


Names of 81215321688320400

  • Cardinal: 81215321688320400 can be written as Eighty-one quadrillion, two hundred fifteen trillion, three hundred twenty-one billion, six hundred eighty-eight million, three hundred twenty thousand, four hundred.

Scientific notation

  • Scientific notation: 8.12153216883204 × 1016

Factors of 81215321688320400

  • Number of distinct prime factors ω(n): 6
  • Total number of prime factors Ω(n): 18
  • Sum of prime factors: 505

Divisors of 81215321688320400

Bases of 81215321688320400

  • Binary: 1001000001000100011100111100111111000110100101001100100002
  • Hexadecimal: 0x12088E79F8D2990
  • Base-36: M7OFFPRRD00

Squares and roots of 81215321688320400

  • 81215321688320400 squared (812153216883204002) is 6595928476937365947481773056160000
  • 81215321688320400 cubed (812153216883204003) is 535690453087621399936119844322218450085273664000000
  • 81215321688320400 is a perfect square number. Its square root is 284983020
  • The cube root of 81215321688320400 is 433057.9239844059

Scales and comparisons

How big is 81215321688320400?
  • 81,215,321,688,320,400 seconds is equal to 2,582,396,014 years, 10 weeks, 4 days, 9 hours.
  • To count from 1 to 81,215,321,688,320,400 would take you about seven billion, seven hundred forty-seven million, one hundred eighty-eight thousand and forty-two years!

    This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

  • A cube with a volume of 81215321688320400 cubic inches would be around 36088.2 feet tall.

Recreational maths with 81215321688320400

  • 81215321688320400 backwards is 00402388612351218
  • 81215321688320400 is a Harshad number.
  • The number of decimal digits it has is: 17
  • The sum of 81215321688320400's digits is 54
  • More coming soon!

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"Number 81215321688320400 - Facts about the integer". Numbermatics.com. 2024. Web. 21 May 2024.

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Numbermatics. (2024). Number 81215321688320400 - Facts about the integer. Retrieved 21 May 2024, from https://numbermatics.com/n/81215321688320400/

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Numbermatics. 2024. "Number 81215321688320400 - Facts about the integer". https://numbermatics.com/n/81215321688320400/

The information we have on file for 81215321688320400 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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