21155791505940

Names of 21155791505940

• Cardinal: 21155791505940 can be written as Twenty-one trillion, one hundred fifty-five billion, seven hundred ninety-one million, five hundred five thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.115579150594 × 10¹³

Factors of 21155791505940

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 19536

Divisors of 21155791505940

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 12 13 14 15 18 20 21 26 28 30 35 36 39 42 45 49 52 60 63 65 70 78 84 90 91 98 105 117 126 130 140 147 156 169 180 182 195 196 210 234 245 252 260 273 294 315 338 364 390 420 441 455 468 490 507 546 585 588 630 637 676 735 757 780 819 845 882 910 980 1014 1092 1170 1183 1260 1274 1365 1470 1514 1521 1638 1690 1764 1820 1911 2028 2205 2271 2340 2366 2535 2548 2730 2940 3028 3042 3185 3276 3380 3549 3785 3822 4095 4410 4542 4732 5070 5299 5460 5733 5915 6084 6370 6813 7098 7570 7605 7644 8190 8281 8820 9084 9555 9841 10140 10598 10647 11355 11466 11830 12740 13626 14196 15140 15210 15897 16380 16562 17745 18749 19110 19682 21196 21294 22710 22932 23660 24843 26495 27252 28665 29523 30420 31794 33124 34065 35490 37093 37498 38220 39364 41405 42588 45420 47691 49205 49686 52990 53235 56247 57330 59046 63588 68130 68887 70980 74186 74529 74996 79485 82810 88569 93745 95382 98410 99372 105980 106470 111279 112494 114660 118092 124215 127933 131243 136260 137774 147615 148372 149058 158970 165620 168741 177138 185465 187490 190764 196820 206661 212940 222558 224988 238455 243737 248430 255866 262486 275548 281235 295230 298116 317940 333837 337482 344435 354276 370930 372645 374980 383799 393729 413322 442845 445116 476910 482209 487474 496860 511732 524972 556395 562470 590460 619983 639665 656215 667674 674964 688870 731211 741860 745290 767598 787458 826644 843705 885690 895531 918701 953820 964418 974948 1033305 1112790 1124940 1151397 1181187 1218685 1239966 1279330 1312430 1335348 1377740 1446627 1462422 1490580 1535196 1574916 1669185 1687410 1706159 1771380 1791062 1837402 1918995 1928836 1968645 2066610 2193633 2225580 2302794 2362374 2411045 2437370 2479932 2558660 2624860 2686593 2756103 2893254 2924844 3099915 3168581 3338370 3374820 3412318 3582124 3656055 3674804 3837990 3937290 4133220 4339881 4387266 4477655 4593505 4605588 4724748 4822090 4874740 5118477 5373186 5512206 5756985 5786508 5905935 6199830 6268717 6337162 6676740 6824636 7233135 7312110 7675980 7874580 8059779 8268309 8530795 8679762 8774532 8955310 9187010 9505743 9644180 10236954 10746372 10968165 11024412 11513970 11811870 11943113 12399660 12537434 12674324 13432965 13780515 14192993 14466270 14624220 15355431 15842905 16119558 16536618 17061590 17359524 17910620 18374020 18806151 19011486 20473908 21699405 21936330 22180067 23027940 23623740 23886226 25074868 25592385 26865930 27561030 28385986 28517229 28932540 30710862 31343585 31685810 32239116 33073236 34123180 35829339 37612302 38022972 40298895 41341545 42578979 43398810 43872660 44360134 47528715 47772452 51184770 53731860 55122060 56418453 56771972 57034458 59715565 61421724 62687170 63371620 66540201 70964965 71658678 75224604 76777155 80597790 82683090 85157958 86797620 88720268 94030755 95057430 99350951 102369540 107488017 110900335 112836906 114068916 119431130 125374340 127736937 133080402 141929930 142586145 143317356 153554310 155260469 161195580 165366180 170315916 179146695 184508909 188061510 190114860 198701902 199620603 212894895 214976034 221800670 225673812 238862260 255473874 266160804 282092265 283859860 285172290 298052853 307108620 310520938 332701005 358293390 369017818 376123020 397403804 399241206 425789790 429952068 443601340 465781407 496754755 510947748 537440085 553526727 564184530 570344580 596105706 621041876 638684685 665402010 695456657 716586780 738035636 776302345 798482412 851579580 894158559 922544545 931562814 993509510 998103015 1074880170 1107053454 1128369060 1192211412 1277369370 1291562363 1330804020 1390913314 1397344221 1490264265 1552604690 1660580181 1788317118 1845089090 1863125628 1987019020 1996206030 2086369971 2149760340 2214106908 2328907035 2398615817 2554738740 2583124726 2767633635 2781826628 2794688442 2980528530 3105209380 3321160362 3477283285 3576634236 3690178180 3874687089 3992412060 4172739942 4470792795 4657814070 4797231634 5166249452 5535267270 5589376884 5961057060 6259109913 6457811815 6642320724 6954566570 6986721105 7195847451 7749374178 8302900905 8345479884 8941585590 9040936541 9315628140 9594463268 10431849855 11070534540 11624061267 11993079085 12518219826 12915623630 13909133140 13973442210 14391694902 15498748356 16605801810 16790310719 17883171180 18081873082 19373435445 20863699710 21587542353 23248122534 23986158170 25036439652 25831247260 27122809623 27946884420 28783389804 31295549565 33211603620 33580621438 35979237255 36163746164 38746870890 41727399420 43175084706 45204682705 46496245068 47972316340 50370932157 54245619246 58120306335 62591099130 67161242876 71958474510 77493741780 81368428869 83951553595 86350169412 90409365410 100741864314 107937711765 108491238492 116240612670 117532175033 125182198260 135614048115 143916949020 151112796471 162736857738 167903107190 180818730820 201483728628 215875423530 232481225340 235064350066 251854660785 271228096230 302225592942 325473715476 335806214380 352596525099 406842144345 431750847060 470128700132 503709321570 542456192460 587660875165 604451185884 705193050198 755563982355 813684288690 1007418643140 1057789575297 1175321750330 1410386100396 1511127964710 1627368577380 1762982625495 2115579150594 2350643500660 3022255929420 3525965250990 4231158301188 5288947876485 7051930501980 10577895752970 21155791505940
• Sum of all divisors σ(n): 80944820775000
• Sum of proper divisors (its aliquot sum) s(n): 59789029269060
• 21155791505940 is an abundant number, because the sum of its proper divisors (59789029269060) is greater than itself. Its abundance is 38633237763120

Bases of 21155791505940

• Binary: 100110011110110110111011100000000101000010100₂
• Hexadecimal: 0x133DB7700A14
• Base-36: 7HYU41B10

Squares and roots of 21155791505940

• 21155791505940 squared (21155791505940²) is 447567514242803053055283600
• 21155791505940 cubed (21155791505940³) is 9468645016152572800603267950117784584000
• The square root of 21155791505940 is 4599542.5322460059
• The cube root of 21155791505940 is 27657.2986566877

Scales and comparisons

• 21,155,791,505,940 seconds is equal to 672,688 years, 37 weeks, 6 days, 23 hours, 39 minutes.
• To count from 1 to 21,155,791,505,940 would take you about one million, six hundred eighty-one thousand, seven hundred twenty-one 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 21155791505940 cubic inches would be around 2304.8 feet tall.

Recreational maths with 21155791505940

• 21155791505940 backwards is 04950519755112
• The number of decimal digits it has is: 14
• The sum of 21155791505940's digits is 54
• More coming soon!