21042622665

Names of 21042622665

• Cardinal: 21042622665 can be written as Twenty-one billion, forty-two million, six hundred twenty-two thousand, six hundred sixty-five.

Scientific notation

• Scientific notation: 2.1042622665 × 10¹⁰

Factors of 21042622665

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3689

Divisors of 21042622665

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 9 15 27 45 67 73 81 135 201 219 243 335 365 405 603 657 1005 1095 1215 1809 1971 3015 3285 3541 4891 5427 5913 9045 9855 10623 14673 16281 17705 17739 24455 27135 29565 31869 44019 53115 73365 81405 88695 95607 132057 159345 220095 237247 258493 286821 396171 478035 660285 711741 775479 860463 1186235 1188513 1292465 1434105 1980855 2135223 2326437 3558705 3877395 4302315 5942565 6405669 6979311 10676115 11632185 17319031 19217007 20937933 32028345 34896555 51957093 57651021 62813799 86595155 96085035 104689665 155871279 259785465 288255105 314068995 467613837 779356395 1402841511 2338069185 4208524533 7014207555 21042622665
• Sum of all divisors σ(n): 38926183296
• Sum of proper divisors (its aliquot sum) s(n): 17883560631
• 21042622665 is a deficient number, because the sum of its proper divisors (17883560631) is less than itself. Its deficiency is 3159062034

Bases of 21042622665

• Binary: 10011100110001111001111000011001001₂
• Hexadecimal: 0x4E63CF0C9
• Base-36: 9O08FK9

Squares and roots of 21042622665

• 21042622665 squared (21042622665²) is 442791968621571702225
• 21042622665 cubed (21042622665³) is 9317504314796253509162415929625
• The square root of 21042622665 is 145060.7550821377
• The cube root of 21042622665 is 2760.7894657961

Scales and comparisons

• 21,042,622,665 seconds is equal to 669 years, 4 weeks, 4 days, 20 hours, 57 minutes, 45 seconds.
• To count from 1 to 21,042,622,665 would take you about one thousand, three hundred thirty-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 21042622665 cubic inches would be around 230.1 feet tall.

Recreational maths with 21042622665

• 21042622665 backwards is 56622624012
• The number of decimal digits it has is: 11
• The sum of 21042622665's digits is 36
• More coming soon!