21144215664

Names of 21144215664

• Cardinal: 21144215664 can be written as Twenty-one billion, one hundred forty-four million, two hundred fifteen thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1144215664 × 10¹⁰

Factors of 21144215664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 65

Divisors of 21144215664

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 13 16 17 18 19 22 24 26 33 34 36 38 39 44 48 51 52 57 66 68 72 76 78 88 99 102 104 114 117 121 132 136 143 144 152 153 156 171 176 187 198 204 208 209 221 228 234 242 247 264 272 286 289 304 306 312 323 342 363 374 396 408 418 429 442 456 468 484 494 528 561 572 578 612 624 627 646 663 684 726 741 748 792 816 836 858 867 884 912 936 968 969 988 1089 1122 1144 1156 1224 1254 1287 1292 1326 1368 1452 1482 1496 1573 1584 1672 1683 1716 1734 1768 1872 1881 1936 1938 1976 1989 2057 2178 2223 2244 2288 2299 2312 2431 2448 2508 2574 2584 2601 2652 2717 2736 2904 2907 2964 2992 3146 3179 3344 3366 3432 3468 3536 3553 3757 3762 3876 3952 3978 4114 4199 4356 4446 4488 4598 4624 4719 4862 4913 5016 5148 5168 5202 5304 5434 5491 5808 5814 5928 6171 6292 6358 6732 6864 6897 6936 7106 7293 7514 7524 7752 7956 8151 8228 8398 8712 8892 8976 9196 9438 9537 9724 9826 10032 10296 10404 10608 10659 10868 10982 11271 11628 11856 12342 12584 12597 12716 13464 13794 13872 14157 14212 14586 14739 15028 15048 15504 15912 16302 16456 16473 16796 17424 17784 18392 18513 18876 19074 19448 19652 20592 20691 20808 21318 21736 21879 21964 22542 23256 24453 24684 25168 25194 25432 26741 26928 27588 28314 28424 28611 29172 29478 29887 30056 30096 31824 31977 32604 32912 32946 33592 33813 34969 35568 36784 37026 37752 37791 38148 38896 39083 39304 41327 41382 41616 42636 43472 43758 43928 44217 45084 46189 46512 48906 49368 49419 50388 50864 53482 54043 55176 56628 56848 57222 58344 58956 59774 60112 60401 63869 63954 65208 65892 67184 67626 69938 71383 74052 75504 75582 76296 78166 78608 80223 82654 82764 85272 87516 87856 88434 89661 90168 92378 93347 97812 98736 98838 100776 104907 106964 108086 110352 113256 114444 116688 117249 117912 119548 120802 123981 127738 127908 130416 131784 135252 138567 139876 142766 148104 151164 152592 156332 160446 162129 165308 165528 170544 175032 176868 179322 180336 181203 184756 186694 191607 195624 197676 201552 209814 213928 214149 216172 226512 228888 234498 235824 239096 240669 241604 247962 255476 255816 263568 268983 270504 277134 279752 280041 285532 296208 302328 312664 314721 320892 324258 330616 331056 350064 351747 353736 358644 362406 369512 371943 373388 383214 391248 395352 415701 419628 427856 428298 432344 454597 457776 468996 478192 481338 483208 486387 495924 508079 510952 511632 537966 541008 543609 554268 559504 560082 571064 574821 594473 604656 625328 629442 641784 642447 648516 661232 664411 702559 703494 707472 717288 724812 739024 743886 746776 766428 785213 790704 831402 839256 840123 856596 864688 909194 937992 962676 966416 972774 991848 1016158 1021904 1026817 1075932 1087218 1108536 1120164 1142128 1149642 1188946 1213511 1258884 1283568 1284894 1297032 1328822 1363791 1405118 1406988 1434576 1449624 1487772 1493552 1524237 1532856 1570426 1662804 1678512 1680246 1713192 1783419 1818388 1875984 1925352 1945548 1983696 1993233 2032316 2053634 2107677 2151864 2174436 2217072 2240328 2299284 2355639 2377892 2427022 2517768 2569788 2594064 2657644 2727582 2810236 2813976 2899248 2975544 3048474 3065712 3080451 3140852 3325608 3360492 3426384 3566838 3636776 3640533 3850704 3891096 3986466 4064632 4091373 4107268 4215354 4303728 4348872 4480656 4572711 4598568 4711278 4755784 4854044 5035536 5139576 5315288 5350257 5455164 5620472 5627952 5951088 5979699 6096948 6160902 6281704 6323031 6651216 6720984 7066917 7133676 7273552 7281066 7728149 7782192 7972932 8129264 8182746 8214536 8430708 8637343 8697744 9145422 9197136 9241353 9422556 9511568 9708088 10279152 10630576 10700514 10910328 10921599 11240944 11294987 11959398 12193896 12321804 12563408 12646062 13348621 13441968 14133834 14267352 14562132 15456298 15945864 16365492 16429072 16861416 17274686 18290844 18482706 18845112 19416176 21401028 21820656 21843198 22589974 23184447 23918796 24387792 24643608 25292124 25912029 26697242 28267668 28534704 29124264 30912596 31891728 32730984 33722832 33884961 34549372 36581688 36965412 37690224 40045863 42802056 43686396 45179948 46368894 47837592 49287216 50584248 51824058 53394484 56535336 58248528 61825192 65461968 67769922 69098744 69553341 73163376 73930824 77736087 80091726 85604112 87372792 90359896 92737788 95675184 101168496 101654883 103648116 106788968 113070672 120137589 123650384 135539844 138197488 139106682 146834831 147861648 155472174 160183452 174745584 180719792 185475576 203309766 207296232 213577936 240275178 271079688 278213364 293669662 310944348 320366904 370951152 406619532 414592464 440504493 480550356 542159376 556426728 587339324 621888696 640733808 813239064 881008986 961100712 1112853456 1174678648 1243777392 1321513479 1626478128 1762017972 1922201424 2349357296 2643026958 3524035944 5286053916 7048071888 10572107832 21144215664
• Sum of all divisors σ(n): 78340298400
• Sum of proper divisors (its aliquot sum) s(n): 57196082736
• 21144215664 is an abundant number, because the sum of its proper divisors (57196082736) is greater than itself. Its abundance is 36051867072

Bases of 21144215664

• Binary: 10011101100010010110010000001110000₂
• Hexadecimal: 0x4EC4B2070
• Base-36: 9POPX80

Squares and roots of 21144215664

• 21144215664 squared (21144215664²) is 447077856045742960896
• 21144215664 cubed (21144215664³) is 9453110606829935414294942674944
• The square root of 21144215664 is 145410.5074057583
• The cube root of 21144215664 is 2765.2253309667

Scales and comparisons

• 21,144,215,664 seconds is equal to 672 years, 16 weeks, 4 days, 17 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,144,215,664 would take you about one thousand, three hundred forty-four 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 21144215664 cubic inches would be around 230.4 feet tall.

Recreational maths with 21144215664

• 21144215664 backwards is 46651244112
• 21144215664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21144215664's digits is 36
• More coming soon!