21365346765

Names of 21365346765

• Cardinal: 21365346765 can be written as Twenty-one billion, three hundred sixty-five million, three hundred forty-six thousand, seven hundred sixty-five.

Scientific notation

• Scientific notation: 2.1365346765 × 10¹⁰

Factors of 21365346765

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 6244

Divisors of 21365346765

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 7 15 19 21 35 49 57 95 105 133 147 245 257 285 399 665 735 771 931 1285 1799 1995 2793 3855 4655 4883 5397 5953 8995 12593 13965 14649 17859 24415 26985 29765 34181 37779 41671 62965 73245 89295 102543 113107 125013 170905 188895 208355 239267 291697 339321 512715 565535 625065 717801 791749 875091 1196335 1458485 1529921 1696605 2375247 3589005 3958745 4375455 4589763 5542243 7649605 10709447 11876235 16626729 22948815 27711215 29068499 32128341 53547235 74966129 83133645 87205497 145342495 160641705 203479493 224898387 374830645 436027485 610438479 1017397465 1124491935 1424356451 3052192395 4273069353 7121782255 21365346765
• Sum of all divisors σ(n): 42028571520
• Sum of proper divisors (its aliquot sum) s(n): 20663224755
• 21365346765 is a deficient number, because the sum of its proper divisors (20663224755) is less than itself. Its deficiency is 702122010

Bases of 21365346765

• Binary: 10011111001011110010101000111001101₂
• Hexadecimal: 0x4F97951CD
• Base-36: 9TCDJ2L

Squares and roots of 21365346765

• 21365346765 squared (21365346765²) is 456478042388695965225
• 21365346765 cubed (21365346765³) is 9752811666242858213188506247125
• The square root of 21365346765 is 146168.8980768481
• The cube root of 21365346765 is 2774.8317086481

Scales and comparisons

• 21,365,346,765 seconds is equal to 679 years, 18 weeks, 2 days, 2 hours, 32 minutes, 45 seconds.
• To count from 1 to 21,365,346,765 would take you about one thousand, three hundred fifty-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 21365346765 cubic inches would be around 231.2 feet tall.

Recreational maths with 21365346765

• 21365346765 backwards is 56764356312
• The number of decimal digits it has is: 11
• The sum of 21365346765's digits is 48
• More coming soon!