21551660442

Names of 21551660442

• Cardinal: 21551660442 can be written as Twenty-one billion, five hundred fifty-one million, six hundred sixty thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 2.1551660442 × 10¹⁰

Factors of 21551660442

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3224

Divisors of 21551660442

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 6 9 13 18 19 26 27 38 39 54 57 78 81 114 117 162 169 171 234 247 338 342 351 494 507 513 702 741 1014 1026 1053 1482 1521 1539 2106 2197 2223 3042 3078 3187 3211 4394 4446 4563 6374 6422 6591 6669 9126 9561 9633 13182 13338 13689 19122 19266 19773 20007 27378 28683 28899 39546 40014 41431 41743 57366 57798 59319 60553 82862 83486 86049 86697 118638 121106 124293 125229 172098 173394 177957 181659 248586 250458 258147 260091 355914 363318 372879 375687 516294 520182 538603 544977 745758 751374 787189 1077206 1089954 1118637 1127061 1574378 1615809 1634931 2237274 2254122 2361567 3231618 3269862 3355911 3381183 4723134 4847427 4904793 6711822 6762366 7001839 7084701 9694854 9809586 10233457 14003678 14169402 14542281 20466914 21005517 21254103 29084562 30700371 42011034 42508206 43626843 61400742 63016551 63762309 87253686 92101113 126033102 127524618 133034941 184202226 189049653 266069882 276303339 378099306 399104823 552606678 567148959 798209646 828910017 1134297918 1197314469 1657820034 2394628938 3591943407 7183886814 10775830221 21551660442
• Sum of all divisors σ(n): 55084814400
• Sum of proper divisors (its aliquot sum) s(n): 33533153958
• 21551660442 is an abundant number, because the sum of its proper divisors (33533153958) is greater than itself. Its abundance is 11981493516

Bases of 21551660442

• Binary: 10100000100100101000011110110011010₂
• Hexadecimal: 0x504943D9A
• Base-36: 9WFAVMI

Squares and roots of 21551660442

• 21551660442 squared (21551660442²) is 464474067807267635364
• 21551660442 cubed (21551660442³) is 10010187393496715577181199070888
• The square root of 21551660442 is 146804.8379379917
• The cube root of 21551660442 is 2782.8742266629

Scales and comparisons

• 21,551,660,442 seconds is equal to 685 years, 14 weeks, 2 days, 12 hours, 20 minutes, 42 seconds.
• To count from 1 to 21,551,660,442 would take you about one thousand, three hundred seventy 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 21551660442 cubic inches would be around 231.9 feet tall.

Recreational maths with 21551660442

• 21551660442 backwards is 24406615512
• The number of decimal digits it has is: 11
• The sum of 21551660442's digits is 36
• More coming soon!