21479979906723

Names of 21479979906723

• Cardinal: 21479979906723 can be written as Twenty-one trillion, four hundred seventy-nine billion, nine hundred seventy-nine million, nine hundred six thousand, seven hundred twenty-three.

Scientific notation

• Scientific notation: 2.1479979906723 × 10¹³

Factors of 21479979906723

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 65695

Divisors of 21479979906723

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 13 37 39 61 111 183 481 793 1443 2257 2379 3721 6771 11163 29341 48373 65581 88023 137677 145119 196743 226981 413031 680943 852553 1789801 2426497 2557659 2950753 4000441 5369403 7279491 8398297 8852259 12001323 25194891 31544461 52005733 94633383 109177861 148016317 156017199 244026901 327533583 444048951 732080703 1924212121 3172349713 5772636363 9028995337 9517049139 14885640961 27086986011 44656922883 117376939381 193513332493 352130818143 550768715557 580539997479 1652306146671 7159993302241 21479979906723
• Sum of all divisors σ(n): 32205076770944
• Sum of proper divisors (its aliquot sum) s(n): 10725096864221
• 21479979906723 is a deficient number, because the sum of its proper divisors (10725096864221) is less than itself. Its deficiency is 10754883042502

Bases of 21479979906723

• Binary: 100111000100100110010100100100111011010100011₂
• Hexadecimal: 0x1389329276A3
• Base-36: 7M3RLFU03

Squares and roots of 21479979906723

• 21479979906723 squared (21479979906723²) is 461389536793223819780598729
• 21479979906723 cubed (21479979906723³) is 9910637979490679960949326849270512355067
• The square root of 21479979906723 is 4634649.9227798211
• The cube root of 21479979906723 is 27797.8553228449

Scales and comparisons

• 21,479,979,906,723 seconds is equal to 682,996 years, 47 weeks, 5 days, 13 hours, 12 minutes, 3 seconds.
• To count from 1 to 21,479,979,906,723 would take you about one million, seven hundred seven thousand, four hundred ninety-two 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 21479979906723 cubic inches would be around 2316.5 feet tall.

Recreational maths with 21479979906723

• 21479979906723 backwards is 32760997997412
• The number of decimal digits it has is: 14
• The sum of 21479979906723's digits is 75
• More coming soon!