21391921199943

Names of 21391921199943

• Cardinal: 21391921199943 can be written as Twenty-one trillion, three hundred ninety-one billion, nine hundred twenty-one million, one hundred ninety-nine thousand, nine hundred forty-three.

Scientific notation

• Scientific notation: 2.1391921199943 × 10¹³

Factors of 21391921199943

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 353

Divisors of 21391921199943

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 17 21 49 51 63 119 127 147 153 199 343 357 381 441 597 833 889 1029 1071 1143 1393 1791 2159 2499 2667 3087 3383 4179 5831 6223 6477 7497 8001 9751 10149 12537 15113 16129 17493 18669 19431 23681 25273 29253 30447 43561 45339 48387 52479 56007 68257 71043 75819 87759 105791 112903 130683 136017 145161 165767 176911 204771 213129 227457 274193 317373 338709 392049 429641 497301 530733 614313 740537 790321 822579 952119 1016127 1160369 1238377 1288923 1491903 1592199 1919351 2048383 2221611 2370963 2467737 3007487 3209671 3481107 3715131 3866769 5532247 5758053 6145149 6664833 7112889 8668639 9022461 9629013 10443321 11145393 13435457 14338681 16596741 17274159 18435447 21052409 22467697 26005917 27067383 28887039 34822511 40306371 43016043 49790223 54564407 63157227 67403091 78017751 94048199 100370767 104467533 120919113 129048129 147366863 157273879 163693221 189471681 202209273 243757577 282144597 301112301 313402599 381950849 407628217 442100589 471821637 491079663 702595369 731272731 846433791 903336903 1100917153 1145852547 1222884651 1326301767 1415464911 1706303039 2107786107 2193818193 2673655943 2853397519 3302751459 3437557641 3668653953 5118909117 6323358321 6929679689 8020967829 8560192557 9908254377 11944121273 15356727351 18715591601 19973782633 20789039067 24062903487 25680577671 35832363819 48507757823 56146774803 59921347899 62367117201 107497091457 139816478431 145523273469 168440324409 179764043697 339554304761 419449435293 436569820407 1018662914283 1258348305879 2376880133327 3055988742849 7130640399981 21391921199943
• Sum of all divisors σ(n): 38650060800000
• Sum of proper divisors (its aliquot sum) s(n): 17258139600057
• 21391921199943 is a deficient number, because the sum of its proper divisors (17258139600057) is less than itself. Its deficiency is 4133781599886

Bases of 21391921199943

• Binary: 100110111010010110001110111010011101101000111₂
• Hexadecimal: 0x1374B1DD3B47
• Base-36: 7KZB9K4ZR

Squares and roots of 21391921199943

• 21391921199943 squared (21391921199943²) is 457614292624570760983203249
• 21391921199943 cubed (21391921199943³) is 9789248887792474888097117892815936214807
• The square root of 21391921199943 is 4625140.1276007843
• The cube root of 21391921199943 is 27759.8168660003

Scales and comparisons

• 21,391,921,199,943 seconds is equal to 680,196 years, 48 weeks, 13 hours, 19 minutes, 3 seconds.
• To count from 1 to 21,391,921,199,943 would take you about one million, seven hundred 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 21391921199943 cubic inches would be around 2313.3 feet tall.

Recreational maths with 21391921199943

• 21391921199943 backwards is 34999112919312
• 21391921199943 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21391921199943's digits is 63
• More coming soon!