21516120507

Names of 21516120507

• Cardinal: 21516120507 can be written as Twenty-one billion, five hundred sixteen million, one hundred twenty thousand, five hundred seven.

Scientific notation

• Scientific notation: 2.1516120507 × 10¹⁰

Factors of 21516120507

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4804

Divisors of 21516120507

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 21 41 61 89 123 183 267 287 427 623 861 1281 1869 2501 3649 4603 5429 7503 10947 13809 16287 17507 25543 32221 38003 52521 76629 96663 114009 188723 222589 280783 409667 566169 667767 842349 1229001 1321061 1558123 1965481 2867669 3963183 4674369 5896443 8603007 11512103 16796347 24989687 34536309 50389041 74969061 80584721 117574429 174927809 241754163 352723287 524783427 1024577167 3073731501 7172040169 21516120507
• Sum of all divisors σ(n): 34527790080
• Sum of proper divisors (its aliquot sum) s(n): 13011669573
• 21516120507 is a deficient number, because the sum of its proper divisors (13011669573) is less than itself. Its deficiency is 8504450934

Bases of 21516120507

• Binary: 10100000010011101011111000110111011₂
• Hexadecimal: 0x50275F1BB
• Base-36: 9VU54U3

Squares and roots of 21516120507

• 21516120507 squared (21516120507²) is 462943441671745937049
• 21516120507 cubed (21516120507³) is 9960746878934611118633919963843
• The square root of 21516120507 is 146683.7431585381
• The cube root of 21516120507 is 2781.3436781631

Scales and comparisons

• 21,516,120,507 seconds is equal to 684 years, 7 weeks, 4 days, 4 hours, 8 minutes, 27 seconds.
• To count from 1 to 21,516,120,507 would take you about one thousand, three hundred sixty-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 21516120507 cubic inches would be around 231.8 feet tall.

Recreational maths with 21516120507

• 21516120507 backwards is 70502161512
• The number of decimal digits it has is: 11
• The sum of 21516120507's digits is 30
• More coming soon!