21001399216644

Names of 21001399216644

• Cardinal: 21001399216644 can be written as Twenty-one trillion, one billion, three hundred ninety-nine million, two hundred sixteen thousand, six hundred forty-four.

Scientific notation

• Scientific notation: 2.1001399216644 × 10¹³

Factors of 21001399216644

• Number of distinct prime factors ω(n): 9
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1150

Divisors of 21001399216644

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 7 11 12 14 19 21 22 28 33 38 42 44 57 66 71 73 76 77 84 114 132 133 142 146 154 209 213 219 228 231 266 284 292 308 399 418 426 438 443 462 497 511 521 532 627 781 798 803 836 852 876 886 924 994 1022 1042 1254 1329 1349 1387 1463 1491 1533 1562 1563 1596 1606 1772 1988 2044 2084 2343 2409 2508 2658 2698 2774 2926 2982 3066 3101 3124 3126 3212 3647 4047 4161 4389 4686 4818 4873 5183 5316 5396 5467 5548 5621 5731 5852 5964 6132 6202 6252 7294 8094 8322 8417 8778 9303 9372 9443 9636 9709 9746 9899 10366 10934 10941 11242 11462 12404 14588 14619 14839 15257 15549 16188 16401 16644 16834 16863 17193 17556 18606 18886 19418 19492 19798 20732 21868 21882 22484 22924 25251 28329 29127 29238 29678 29697 30514 31098 31453 32339 32802 33668 33726 34111 34386 36281 36991 37212 37772 38033 38836 39596 40117 43764 44517 45771 50502 56658 57013 58254 58476 58919 59356 59394 61028 62196 62906 64678 65604 67452 68222 68772 69293 72562 73982 76066 80234 89034 91542 92587 94359 97017 98477 101004 102333 103873 106799 108843 108889 110973 113316 114026 114099 116508 117838 118788 120351 125812 129356 136444 138586 145124 147964 152132 160468 171039 176757 178068 183084 185174 188718 194034 196954 204666 207746 207879 213598 217686 217778 220171 221946 226373 228052 228198 230803 235676 240702 258937 266231 277172 277761 295431 311619 320397 326667 342078 345983 353514 355729 370348 377436 388068 393908 399091 406901 409332 415492 415758 418363 427196 435372 435556 440342 443892 452746 456396 461606 481404 517874 532462 555522 590862 597607 614441 623238 640794 648109 653334 660513 679119 684156 689339 691966 692409 702829 707028 711458 722627 762223 776811 798182 798693 813802 831516 836726 880684 905492 923212 1035748 1037949 1064924 1067187 1083247 1111044 1181724 1195214 1197273 1220703 1228882 1246476 1255089 1281588 1296218 1306668 1321026 1358238 1378678 1383932 1384818 1405658 1422916 1445254 1524446 1553622 1596364 1597386 1615621 1627604 1673452 1792821 1843323 1944327 2068017 2075898 2108487 2134374 2166494 2167881 2286669 2296069 2390428 2394546 2421881 2441406 2457764 2490103 2510178 2538833 2592436 2642052 2700343 2716476 2757356 2769636 2811316 2848307 2890508 2928541 3048892 3107244 3194772 3231242 3249741 3585642 3686646 3888654 4136034 4151796 4183249 4216974 4268748 4301087 4332988 4335762 4385257 4573338 4592138 4789092 4843762 4846863 4882812 4919803 4980206 5020356 5058389 5077666 5400686 5696614 5857082 6462484 6499482 6573677 6758851 6888207 7171284 7265643 7373292 7470309 7582729 7616499 7731119 7777308 7948897 8101029 8272068 8366498 8433948 8544921 8602174 8671524 8770514 8785623 9146676 9184276 9687524 9693726 9839606 9960412 10116778 10155332 10801372 11393228 11714164 12549747 12903261 12998964 13147354 13155771 13517702 13776414 14531286 14759409 14940618 15165458 15175167 15232998 15462238 15897794 16072483 16202058 16387013 16732996 16848619 17089842 17204348 17541028 17571246 17771831 18902401 19387452 19679212 19721031 20233556 20276553 22748187 23193357 23846691 25099494 25256759 25806522 26294708 26311542 27035404 27552828 29062572 29518818 29703773 29881236 30330916 30350334 30465996 30696799 30924476 31795588 32144966 32404116 32774026 33697238 34179684 35142492 35543662 37804802 39442062 40553106 43625311 45496374 46015739 46386714 47311957 47693382 48217449 48237827 49161039 50198988 50513518 50545857 51306517 51613044 52623084 53315493 54117833 55642279 56707203 59037636 59407546 60700668 61393598 64289932 65548052 67394476 71087324 75609604 75770277 78884124 81106212 87250622 89111319 90992748 92031478 92090397 92773428 94623914 95386764 96434898 96475654 98322078 101027036 101091714 102613034 106630986 108235666 111284558 113414406 114709091 117940333 118815092 122787196 130875933 138047217 141935871 144713481 151540554 153919551 162353499 166926837 174501244 176797313 178222638 180257143 184062956 184180794 185334809 189247828 192869796 192951308 196644156 202183428 205226068 207926411 213261972 216471332 222569116 226828812 229418182 235880666 261751866 276094434 283871742 289426962 303081108 305377177 307839102 311353247 320123761 324706998 333853674 337664789 344127273 353594626 353820999 356445276 359145619 360514286 368361588 370669618 415852822 458836364 471761332 479878421 523503732 530391939 540771429 552188868 556004427 564371687 567743484 578853924 610754354 615678204 622706494 623779233 640247522 649413996 667707348 675329578 688254546 707189252 707641998 718291238 721028572 741339236 831705644 916131531 934059741 959756842 960371283 1012994367 1060783878 1077436857 1081542858 1112008854 1128743374 1196251949 1221508708 1245412988 1247558466 1261800001 1280495044 1297343663 1350659156 1376509092 1415283996 1436582476 1439635263 1693115061 1832263062 1868119482 1919513684 1920742566 2025988734 2121567756 2154873714 2163085716 2179472729 2224017708 2240866327 2257486748 2392503898 2495116932 2523600002 2594687326 2879270526 3359148947 3386230122 3424885717 3521361371 3588755847 3664526124 3736238964 3785400003 3841485132 3892030989 3950601809 4051977468 4309747428 4358945458 4481732654 4785007796 5047200004 5189374652 5758541052 6538418187 6718297894 6722598981 6772460244 6849771434 7042722742 7177511694 7570800006 7784061978 7901203618 8373763643 8717890916 8963465308 10077446841 10274657151 10564084113 11851805427 13076836374 13158771439 13436595788 13445197962 13699542868 14085445484 14355023388 15141600012 15568123956 15802407236 16747527286 20154893682 20549314302 21128168226 22728787031 23703610854 23974200019 24649529597 25121290929 26153672748 26317542878 26890395924 33495054572 39476314317 40309787364 41098628604 42256336452 45457574062 47407221708 47948400038 49299059194 50242581858 52635085756 68186361093 71922600057 73948588791 78952628634 90915148124 92111400073 95896800076 98598118388 100485163716 136372722186 143845200114 147897177582 157905257268 159101509217 184222800146 250016657341 272745444372 276334200219 287690400228 295794355164 318203018434 368445600292 477304527651 500033314682 552668400438 636406036868 750049972023 954609055302 1000066629364 1105336800876 1500099944046 1750116601387 1909218110604 3000199888092 3500233202774 5250349804161 7000466405548 10500699608322 21001399216644
• Sum of all divisors σ(n): 66386068439040
• Sum of proper divisors (its aliquot sum) s(n): 45384669222396
• 21001399216644 is an abundant number, because the sum of its proper divisors (45384669222396) is greater than itself. Its abundance is 24383270005752

Bases of 21001399216644

• Binary: 100110001100111000100111100001010101000000100₂
• Hexadecimal: 0x1319C4F0AA04
• Base-36: 7FZWQUQ6C

Squares and roots of 21001399216644

• 21001399216644 squared (21001399216644²) is 441058769056855216846622736
• 21001399216644 cubed (21001399216644³) is 9262851286964606057780787479727400017984
• The square root of 21001399216644 is 4582728.3594649159
• The cube root of 21001399216644 is 27589.8545014133

Scales and comparisons

• 21,001,399,216,644 seconds is equal to 667,779 years, 27 weeks, 5 days, 4 hours, 37 minutes, 24 seconds.
• To count from 1 to 21,001,399,216,644 would take you about one million, six hundred sixty-nine thousand, four hundred forty-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 21001399216644 cubic inches would be around 2299.2 feet tall.

Recreational maths with 21001399216644

• 21001399216644 backwards is 44661299310012
• The number of decimal digits it has is: 14
• The sum of 21001399216644's digits is 48
• More coming soon!