21278421468864

Names of 21278421468864

• Cardinal: 21278421468864 can be written as Twenty-one trillion, two hundred seventy-eight billion, four hundred twenty-one million, four hundred sixty-eight thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1278421468864 × 10¹³

Factors of 21278421468864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 23
• Sum of prime factors: 43

Divisors of 21278421468864

• Number of divisors d(n): 784
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 31 32 36 42 48 54 56 62 63 64 72 81 84 93 96 108 112 124 126 144 162 168 186 189 192 216 217 224 243 248 252 279 288 324 336 372 378 432 434 448 486 496 504 558 567 576 648 651 672 729 744 756 837 864 868 961 972 992 1008 1116 1134 1296 1302 1344 1458 1488 1512 1674 1701 1728 1736 1922 1944 1953 1984 2016 2187 2232 2268 2511 2592 2604 2883 2916 2976 3024 3348 3402 3472 3844 3888 3906 4032 4374 4464 4536 5022 5103 5184 5208 5766 5832 5859 5952 6048 6561 6696 6727 6804 6944 7533 7688 7776 7812 8649 8748 8928 9072 10044 10206 10416 11532 11664 11718 12096 13122 13392 13454 13608 13888 15066 15309 15376 15552 15624 17298 17496 17577 17856 18144 19683 20088 20181 20412 20832 22599 23064 23328 23436 25947 26244 26784 26908 27216 29791 30132 30618 30752 31248 34596 34992 35154 36288 39366 40176 40362 40824 41664 45198 45927 46128 46656 46872 51894 52488 52731 53568 53816 54432 59049 59582 60264 60543 61236 61504 62496 67797 69192 69984 70308 77841 78732 80352 80724 81648 89373 90396 91854 92256 93744 103788 104976 105462 107632 108864 118098 119164 120528 121086 122472 124992 135594 137781 138384 139968 140616 155682 157464 158193 160704 161448 163296 177147 178746 180792 181629 183708 184512 187488 203391 207576 208537 209952 210924 215264 233523 236196 238328 241056 242172 244944 268119 271188 275562 276768 281232 311364 314928 316386 322896 326592 354294 357492 361584 363258 367416 374976 406782 413343 415152 417074 419904 421848 430528 467046 472392 474579 476656 482112 484344 489888 531441 536238 542376 544887 551124 553536 562464 610173 622728 625611 629856 632772 645792 700569 708588 714984 723168 726516 734832 804357 813564 826686 830304 834148 843696 934092 944784 949158 953312 968688 979776 1062882 1072476 1084752 1089774 1102248 1124928 1220346 1240029 1245456 1251222 1259712 1265544 1291584 1401138 1417176 1423737 1429968 1446336 1453032 1469664 1594323 1608714 1627128 1634661 1653372 1660608 1668296 1687392 1830519 1868184 1876833 1889568 1898316 1906624 1937376 2101707 2125764 2144952 2169504 2179548 2204496 2413071 2440692 2480058 2490912 2502444 2531088 2802276 2834352 2847474 2859936 2906064 2939328 3188646 3217428 3254256 3269322 3306744 3336592 3374784 3661038 3720087 3736368 3753666 3779136 3796632 3874752 4203414 4251528 4271211 4289904 4339008 4359096 4408992 4826142 4881384 4903983 4960116 4981824 5004888 5062176 5491557 5604552 5630499 5668704 5694948 5719872 5812128 6305121 6377292 6434856 6508512 6538644 6613488 6673184 7239213 7322076 7440174 7472736 7507332 7593264 8406828 8503056 8542422 8579808 8718192 8817984 9652284 9762768 9807966 9920232 10009776 10124352 10983114 11160261 11209104 11260998 11337408 11389896 11624256 12610242 12754584 12813633 12869712 13017024 13077288 13226976 13346368 14478426 14644152 14711949 14880348 14945472 15014664 15186528 16474671 16813656 16891497 17006112 17084844 17159616 17436384 18915363 19304568 19525536 19615932 19840464 20019552 21717639 21966228 22320522 22418208 22521996 22779792 25220484 25509168 25627266 25739424 26154576 26453952 28956852 29288304 29423898 29760696 30029328 30373056 32949342 33627312 33782994 34012224 34169688 34872768 37830726 38440899 38609136 39051072 39231864 39680928 40039104 43435278 43932456 44135847 44641044 44836416 45043992 45559584 49424013 50440968 50674491 51018336 51254532 51478848 52309152 56746089 57913704 58576608 58847796 59521392 60058656 65152917 65898684 67254624 67565988 68339376 75661452 76881798 77218272 78463728 79361856 86870556 87864912 88271694 89282088 90087984 91119168 98848026 100881936 101348982 102036672 102509064 104618304 113492178 115322697 115827408 117153216 117695592 119042784 120117312 130305834 131797368 132407541 134509248 135131976 136678752 151322904 152023473 153763596 154436544 156927456 170238267 173741112 175729824 176543388 178564176 180175968 195458751 197696052 201763872 202697964 205018128 226984356 230645394 231654816 235391184 238085568 260611668 263594736 264815082 270263952 273357504 302645808 304046946 307527192 313854912 340476534 345968091 347482224 351459648 353086776 357128352 360351936 390917502 395392104 397222623 403527744 405395928 410036256 453968712 456070419 461290788 463309632 470782368 510714801 521223336 527189472 529630164 540527904 586376253 605291616 608093892 615054384 680953068 691936182 694964448 706173552 714256704 781835004 790784208 794445246 810791856 820072512 907937424 912140838 922581576 941564736 1021429602 1042446672 1054378944 1059260328 1081055808 1172752506 1191667869 1210583232 1216187784 1230108768 1361906136 1368211257 1383872364 1389928896 1412347104 1532144403 1563670008 1581568416 1588890492 1621583712 1759128759 1815874848 1824281676 1845163152 2042859204 2084893344 2118520656 2345505012 2383335738 2432375568 2460217536 2723812272 2736422514 2767744728 2824694208 3064288806 3127340016 3163136832 3177780984 3243167424 3518257518 3575003607 3631749696 3648563352 3690326304 4085718408 4104633771 4169786688 4237041312 4691010024 4766671476 4864751136 5277386277 5447624544 5472845028 5535489456 6128577612 6254680032 6355561968 7036515036 7150007214 7297126704 7380652608 8171436816 8209267542 8474082624 9382020048 9533342952 9729502272 10554772554 10725010821 10895249088 10945690056 11070978912 12257155224 12313901313 12509360064 12711123936 14073030072 14300014428 14594253408 15832158831 16342873632 16418535084 18764040096 19066685904 21109545108 21450021642 21891380112 22141957824 24514310448 24627802626 25422247872 28146060144 28600028856 29188506816 31664317662 32685747264 32837070168 36941703939 37528080192 38133371808 42219090216 42900043284 43782760224 47496476493 49028620896 49255605252 56292120288 57200057712 63328635324 65674140336 73883407878 76266743616 84438180432 85800086568 87565520448 94992952986 98057241792 98511210504 110825111817 112584240576 114400115424 126657270648 131348280672 147766815756 168876360864 171600173136 189985905972 197022421008 221650223634 228800230848 253314541296 262696561344 295533631512 332475335451 337752721728 343200346272 379971811944 394044842016 443300447268 506629082592 591067263024 664950670902 686400692544 759943623888 788089684032 886600894536 1013258165184 1182134526048 1329901341804 1519887247776 1773201789072 2364269052096 2659802683608 3039774495552 3546403578144 5319605367216 7092807156288 10639210734432 21278421468864
• Sum of all divisors σ(n): 74797354551296
• Sum of proper divisors (its aliquot sum) s(n): 53518933082432
• 21278421468864 is an abundant number, because the sum of its proper divisors (53518933082432) is greater than itself. Its abundance is 32240511613568

Bases of 21278421468864

• Binary: 100110101101001000100110000001100011011000000₂
• Hexadecimal: 0x135A44C0C6C0
• Base-36: 7JJ66R000

Squares and roots of 21278421468864

• 21278421468864 squared (21278421468864²) is 452771220206612387321450496
• 21278421468864 cubed (21278421468864³) is 9634256852528130752193996353631381356544
• The square root of 21278421468864 is 4612853.9396846287
• The cube root of 21278421468864 is 27710.6344275719

Scales and comparisons

• 21,278,421,468,864 seconds is equal to 676,587 years, 51 weeks, 1 day, 6 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,278,421,468,864 would take you about one million, six hundred ninety-one thousand, four hundred sixty-nine 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 21278421468864 cubic inches would be around 2309.2 feet tall.

Recreational maths with 21278421468864

• 21278421468864 backwards is 46886412487212
• 21278421468864 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21278421468864's digits is 63
• More coming soon!