640943387479249920

640,943,387,479,249,920 is an even composite number composed of eight prime numbers multiplied together.

What does the number 640943387479249920 look like?

This visualization shows the relationship between its 8 prime factors (large circles) and 7920 divisors.

640943387479249920 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of seven thousand, nine hundred twenty divisors.

Prime factorization of 640943387479249920:

210 × 34 × 5 × 13 × 17 × 532 × 101 × 1572

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 13 × 17 × 53 × 53 × 101 × 157 × 157)

See below for interesting mathematical facts about the number 640943387479249920 from the Numbermatics database.


Names of 640943387479249920

  • Cardinal: 640943387479249920 can be written as Six hundred forty quadrillion, nine hundred forty-three trillion, three hundred eighty-seven billion, four hundred seventy-nine million, two hundred forty-nine thousand, nine hundred twenty.

Scientific notation

  • Scientific notation: 6.4094338747924992 × 1017

Factors of 640943387479249920

  • Number of distinct prime factors ω(n): 8
  • Total number of prime factors Ω(n): 22
  • Sum of prime factors: 351

Divisors of 640943387479249920

Bases of 640943387479249920

  • Binary: 1000111001010001011010011101011100111101011000010100000000002
  • Hexadecimal: 0x8E5169D73D61400
  • Base-36: 4VAZGVCDA800

Squares and roots of 640943387479249920

  • 640943387479249920 squared (6409433874792499202) is 410808425953375903118238565820006400
  • 640943387479249920 cubed (6409433874792499203) is 263304944135575360702269013150040917587829601599488000
  • The square root of 640943387479249920 is 800589400.0542662193
  • The cube root of 640943387479249920 is 862197.0986962343

Scales and comparisons

How big is 640943387479249920?
  • 640,943,387,479,249,920 seconds is equal to 20,380,017,153 years, 40 weeks, 19 hours, 12 minutes.
  • To count from 1 to 640,943,387,479,249,920 would take you about sixty-one billion, one hundred forty million, fifty-one thousand, four hundred sixty-one 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 640943387479249920 cubic inches would be around 71849.8 feet tall.

Recreational maths with 640943387479249920

  • 640943387479249920 backwards is 029942974783349046
  • 640943387479249920 is a Harshad number.
  • The number of decimal digits it has is: 18
  • The sum of 640943387479249920's digits is 90
  • More coming soon!

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"Number 640943387479249920 - Facts about the integer". Numbermatics.com. 2024. Web. 9 June 2024.

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Numbermatics. (2024). Number 640943387479249920 - Facts about the integer. Retrieved 9 June 2024, from https://numbermatics.com/n/640943387479249920/

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Numbermatics. 2024. "Number 640943387479249920 - Facts about the integer". https://numbermatics.com/n/640943387479249920/

The information we have on file for 640943387479249920 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 640943387479249920, math, Factors of 640943387479249920, curriculum, school, college, exams, university, Prime factorization of 640943387479249920, STEM, science, technology, engineering, physics, economics, calculator, six hundred forty quadrillion, nine hundred forty-three trillion, three hundred eighty-seven billion, four hundred seventy-nine million, two hundred forty-nine thousand, nine hundred twenty.

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