81739640356208640

81,739,640,356,208,640 is an even composite number composed of six prime numbers multiplied together.

What does the number 81739640356208640 look like?

This visualization shows the relationship between its 6 prime factors (large circles) and 3456 divisors.

81739640356208640 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three thousand, four hundred fifty-six divisors.

Prime factorization of 81739640356208640:

223 × 32 × 5 × 13 × 233 × 372

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 13 × 23 × 23 × 23 × 37 × 37)

See below for interesting mathematical facts about the number 81739640356208640 from the Numbermatics database.


Names of 81739640356208640

  • Cardinal: 81739640356208640 can be written as Eighty-one quadrillion, seven hundred thirty-nine trillion, six hundred forty billion, three hundred fifty-six million, two hundred eight thousand, six hundred forty.

Scientific notation

  • Scientific notation: 8.173964035620864 × 1016

Factors of 81739640356208640

  • Number of distinct prime factors ω(n): 6
  • Total number of prime factors Ω(n): 32
  • Sum of prime factors: 83

Divisors of 81739640356208640

Bases of 81739640356208640

  • Binary: 1001000100110010111000101000100111000000000000000000000002
  • Hexadecimal: 0x12265C513800000
  • Base-36: MCUA8DX43K0

Squares and roots of 81739640356208640

  • 81739640356208640 squared (817396403562086402) is 6681368805562332123863795210649600
  • 81739640356208640 cubed (817396403562086403) is 546132683253856320932844790622056507368007532544000
  • The square root of 81739640356208640 is 285901452.1757604505
  • The cube root of 81739640356208640 is 433987.8530798123

Scales and comparisons

How big is 81739640356208640?
  • 81,739,640,356,208,640 seconds is equal to 2,599,067,726 years, 6 days, 22 hours, 24 minutes.
  • To count from 1 to 81,739,640,356,208,640 would take you about seven billion, seven hundred ninety-seven million, two hundred three thousand, one hundred seventy-eight 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 81739640356208640 cubic inches would be around 36165.7 feet tall.

Recreational maths with 81739640356208640

  • 81739640356208640 backwards is 04680265304693718
  • 81739640356208640 is a Harshad number.
  • The number of decimal digits it has is: 17
  • The sum of 81739640356208640's digits is 72
  • More coming soon!

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"Number 81739640356208640 - Facts about the integer". Numbermatics.com. 2024. Web. 3 June 2024.

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Numbermatics. (2024). Number 81739640356208640 - Facts about the integer. Retrieved 3 June 2024, from https://numbermatics.com/n/81739640356208640/

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The information we have on file for 81739640356208640 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!

Keywords: Divisors of 81739640356208640, math, Factors of 81739640356208640, curriculum, school, college, exams, university, Prime factorization of 81739640356208640, STEM, science, technology, engineering, physics, economics, calculator, eighty-one quadrillion, seven hundred thirty-nine trillion, six hundred forty billion, three hundred fifty-six million, two hundred eight thousand, six hundred forty.

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