81813720799641600

81,813,720,799,641,600 is an even composite number composed of six prime numbers multiplied together.

What does the number 81813720799641600 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 5472 divisors.

81813720799641600 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of five thousand, four hundred seventy-two divisors.

Prime factorization of 81813720799641600:

218 × 32 × 52 × 7 × 113 × 533

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 5 × 7 × 11 × 11 × 11 × 53 × 53 × 53)

See below for interesting mathematical facts about the number 81813720799641600 from the Numbermatics database.


Names of 81813720799641600

  • Cardinal: 81813720799641600 can be written as Eighty-one quadrillion, eight hundred thirteen trillion, seven hundred twenty billion, seven hundred ninety-nine million, six hundred forty-one thousand, six hundred.

Scientific notation

  • Scientific notation: 8.18137207996416 × 1016

Factors of 81813720799641600

  • Number of distinct prime factors ω(n): 6
  • Total number of prime factors Ω(n): 29
  • Sum of prime factors: 81

Divisors of 81813720799641600

Bases of 81813720799641600

  • Binary: 1001000101010100100100101010001100000010000000000000000002
  • Hexadecimal: 0x122A92546040000
  • Base-36: MDKJKH0FLS0

Squares and roots of 81813720799641600

  • 81813720799641600 squared (818137207996416002) is 6693484911081708564930688450560000
  • 81813720799641600 cubed (818137207996416003) is 547618905691852785526076331896229284907319296000000
  • The square root of 81813720799641600 is 286030978.7411874027
  • The cube root of 81813720799641600 is 434118.9208818167

Scales and comparisons

How big is 81813720799641600?
  • 81,813,720,799,641,600 seconds is equal to 2,601,423,254 years, 50 weeks, 4 days, 16 hours.
  • To count from 1 to 81,813,720,799,641,600 would take you about seven billion, eight hundred four million, two hundred sixty-nine thousand, seven hundred sixty-four 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 81813720799641600 cubic inches would be around 36176.6 feet tall.

Recreational maths with 81813720799641600

  • 81813720799641600 backwards is 00614699702731818
  • 81813720799641600 is a Harshad number.
  • The number of decimal digits it has is: 17
  • The sum of 81813720799641600's digits is 72
  • More coming soon!

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Numbermatics. (2024). Number 81813720799641600 - Facts about the integer. Retrieved 2 May 2024, from https://numbermatics.com/n/81813720799641600/

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The information we have on file for 81813720799641600 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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