21408139978017408

21,408,139,978,017,408 is an even composite number composed of eight prime numbers multiplied together.

What does the number 21408139978017408 look like?

This visualization shows the relationship between its 8 prime factors (large circles) and 2560 divisors.

21408139978017408 is an even composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of two thousand, five hundred sixty divisors.

Prime factorization of 21408139978017408:

27 × 34 × 7 × 11 × 61 × 293 × 317 × 4733

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 7 × 11 × 61 × 293 × 317 × 4733)

See below for interesting mathematical facts about the number 21408139978017408 from the Numbermatics database.


Names of 21408139978017408

  • Cardinal: 21408139978017408 can be written as Twenty-one quadrillion, four hundred eight trillion, one hundred thirty-nine billion, nine hundred seventy-eight million, seventeen thousand, four hundred eight.

Scientific notation

  • Scientific notation: 2.1408139978017408 × 1016

Factors of 21408139978017408

  • Number of distinct prime factors ω(n): 8
  • Total number of prime factors Ω(n): 17
  • Sum of prime factors: 5427

Divisors of 21408139978017408

Bases of 21408139978017408

  • Binary: 10011000000111010010111000000101011000100001010100000002
  • Hexadecimal: 0x4C0E9702B10A80
  • Base-36: 5USJVQH4800

Squares and roots of 21408139978017408

  • 21408139978017408 squared (214081399780174082) is 458308457318387186285474351038464
  • 21408139978017408 cubed (214081399780174083) is 9811531607381249630825995259299004511616669581312
  • The square root of 21408139978017408 is 146315207.6102050575
  • The cube root of 21408139978017408 is 277668.3067538295

Scales and comparisons

How big is 21408139978017408?
  • 21,408,139,978,017,408 seconds is equal to 680,712,631 years, 29 weeks, 6 days, 17 hours, 16 minutes, 48 seconds.
  • To count from 1 to 21,408,139,978,017,408 would take you about two billion, forty-two million, one hundred thirty-seven thousand, eight hundred ninety-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 21408139978017408 cubic inches would be around 23139 feet tall.

Recreational maths with 21408139978017408

  • 21408139978017408 backwards is 80471087993180412
  • 21408139978017408 is a Harshad number.
  • The number of decimal digits it has is: 17
  • The sum of 21408139978017408's digits is 72
  • More coming soon!

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"Number 21408139978017408 - Facts about the integer". Numbermatics.com. 2024. Web. 23 September 2024.

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Numbermatics. (2024). Number 21408139978017408 - Facts about the integer. Retrieved 23 September 2024, from https://numbermatics.com/n/21408139978017408/

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The information we have on file for 21408139978017408 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 21408139978017408, math, Factors of 21408139978017408, curriculum, school, college, exams, university, Prime factorization of 21408139978017408, STEM, science, technology, engineering, physics, economics, calculator, twenty-one quadrillion, four hundred eight trillion, one hundred thirty-nine billion, nine hundred seventy-eight million, seventeen thousand, four hundred eight.

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