21000918412656

Names of 21000918412656

• Cardinal: 21000918412656 can be written as Twenty-one trillion, nine hundred eighteen million, four hundred twelve thousand, six hundred fifty-six.

Scientific notation

• Scientific notation: 2.1000918412656 × 10¹³

Factors of 21000918412656

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4636

Divisors of 21000918412656

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 36 39 42 48 52 56 63 72 73 78 84 91 104 112 117 126 144 146 156 168 169 182 208 219 234 252 273 292 312 336 338 364 409 438 468 504 507 511 546 584 624 657 676 728 818 819 876 936 949 1008 1014 1022 1092 1168 1183 1227 1314 1352 1456 1521 1533 1636 1638 1752 1872 1898 2028 2044 2184 2366 2454 2628 2704 2847 2863 3042 3066 3272 3276 3504 3549 3681 3796 4056 4088 4129 4368 4599 4732 4908 5256 5317 5694 5726 6084 6132 6544 6552 6643 7098 7362 7592 8112 8176 8258 8541 8589 9198 9464 9816 10512 10634 10647 11388 11452 12168 12264 12337 12387 13104 13286 14196 14724 15184 15951 16516 17082 17178 18396 18928 19632 19929 21268 21294 22776 22904 24336 24528 24674 24774 25767 26572 28392 28903 29448 29857 31902 33032 34164 34356 36792 37011 37161 37219 39858 42536 42588 45552 45808 47853 49348 49548 51534 53144 53677 56784 57806 58896 59714 59787 63804 66064 68328 68712 69121 73584 74022 74322 74438 79716 85072 85176 86359 86709 89571 95706 98696 99096 103068 106288 107354 111033 111657 115612 119428 119574 127608 136656 137424 138242 148044 148644 148876 159432 161031 170352 172718 173418 179142 191412 197392 198192 206136 207363 208999 214708 222066 223314 231224 238856 239148 255216 259077 260127 268713 276484 296088 297288 297752 301417 318864 322062 334971 345436 346836 358284 375739 382824 388141 412272 414726 417998 429416 444132 446628 462448 477712 478296 483093 483847 518154 520254 537426 552968 592176 594576 595504 602834 622089 626997 644124 669942 690872 693672 697801 716568 751478 765648 776282 777231 829452 835996 858832 888264 893256 904251 956592 966186 967694 1036308 1040508 1074852 1105936 1127217 1164423 1205668 1244178 1253994 1288248 1339884 1381744 1387344 1395602 1433136 1451541 1502956 1552564 1554462 1658904 1671992 1688761 1776528 1786512 1808502 1880991 1932372 1935388 2072616 2081016 2093403 2109919 2149704 2254434 2328846 2411336 2488356 2507988 2576496 2679768 2712753 2716987 2791204 2903082 3005912 3105128 3108924 3317808 3343984 3377522 3381651 3493269 3617004 3761982 3864744 3870776 3918421 4145232 4162032 4186806 4219838 4299408 4354623 4508868 4657692 4822672 4884607 4976712 5015976 5045833 5066283 5359536 5425506 5433974 5582408 5806164 6011824 6210256 6217848 6280209 6329757 6755044 6763302 6986538 7234008 7523964 7729488 7741552 7836842 8150961 8373612 8439676 8709246 9017736 9315384 9769214 9953424 10031952 10091666 10132566 10851012 10867948 11164816 11612328 11755263 11821327 12435696 12560418 12659514 13510088 13526604 13973076 14468016 14653821 15047928 15137499 15198849 15673684 16301922 16747224 16879352 17418492 18035472 18630768 18989271 19538428 20183332 20265132 21702024 21735896 21953893 23224656 23510526 23642654 24452883 25120836 25319028 27020176 27053208 27428947 27946152 29307642 30095856 30274998 30397698 31347368 32603844 33494448 33758704 34836984 35265789 35320831 35463981 37978542 39076856 40366664 40530264 43404048 43471792 43907786 43961463 45412497 47021052 47285308 48905766 50241672 50638056 50939473 54106416 54857894 55892304 58615284 60549996 60795396 62694736 65207688 65861679 69673968 70531578 70641662 70927962 75957084 78153712 80733328 81060528 82286841 87815572 87922926 90824994 94042104 94570616 97811532 100483344 101276112 101878946 105962493 106391943 109715788 117230568 121099992 121590792 123279553 130415376 131723358 141063156 141283324 141855924 151914168 152818419 153677251 164573682 175631144 175845852 181649988 188084208 189141232 195623064 197585037 203757892 211924986 212783886 219431576 234461136 242199984 243181584 246559106 246860523 263446716 282126312 282566648 283711848 285400609 303828336 305636838 307354502 317887479 329147364 351262288 351691704 356576311 363299976 369838659 391246128 395170074 407515784 423849972 425567772 438863152 458455257 461031753 493118212 493721046 526893432 564252624 565133296 567423696 570801218 611273676 614709004 635774958 658294728 703383408 713152622 726599952 739677318 790340148 815031568 847699944 851135544 856201827 862956871 916910514 922063506 986236424 987442092 1053786864 1069728933 1109515977 1141602436 1222547352 1229418008 1271549916 1316589456 1383095259 1426305244 1479354636 1580680296 1602634189 1695399888 1702271088 1712403654 1725913742 1833821028 1844127012 1972472848 1974884184 1997804263 2139457866 2219031954 2283204872 2445094704 2458836016 2543099832 2568605481 2588870613 2766190518 2852610488 2958709272 3161360592 3205268378 3209186799 3424807308 3451827484 3667642056 3688254024 3949768368 3995608526 4278915732 4438063908 4566409744 4807902567 5086199664 5137210962 5177741226 5532381036 5705220976 5917418544 5993412789 6410536756 6418373598 6849614616 6903654968 7335284112 7376508048 7766611839 7991217052 8557831464 8876127816 9615805134 10274421924 10355482452 11064762072 11218439323 11986825578 12821073512 12836747196 13699229232 13807309936 14423707701 15533223678 15982434104 17115662928 17752255632 17980238367 19231610268 20548843848 20710964904 20834244457 22129524144 22436878646 23973651156 25642147024 25673494392 28847415402 31066447356 31964868208 33655317969 35960476734 38463220536 41097687696 41421929808 41668488914 44873757292 47947302312 51346988784 57694830804 62132894712 62502733371 67310635938 71920953468 76926441072 83336977828 89747514584 95894604624 100965953907 115389661608 124265789424 125005466742 134621271876 143841906936 145839711199 166673955656 179495029168 187508200113 201931907814 230779323216 250010933484 269242543752 287683813872 291679422398 333347911312 375016400226 403863815628 437519133597 500021866968 538485087504 583358844796 750032800452 807727631256 875038267194 1000043733936 1166717689592 1312557400791 1500065600904 1615455262512 1750076534388 2333435379184 2625114801582 3000131201808 3500153068776 5250229603164 7000306137552 10500459206328 21000918412656
• Sum of all divisors σ(n): 73928475566400
• Sum of proper divisors (its aliquot sum) s(n): 52927557153744
• 21000918412656 is an abundant number, because the sum of its proper divisors (52927557153744) is greater than itself. Its abundance is 31926638741088

Bases of 21000918412656

• Binary: 100110001100110101000010010000010110101110000₂
• Hexadecimal: 0x1319A8482D70
• Base-36: 7FZOSLFG0

Squares and roots of 21000918412656

• 21000918412656 squared (21000918412656²) is 441038574175033806700974336
• 21000918412656 cubed (21000918412656³) is 9262215113084016486527763088437713596416
• The square root of 21000918412656 is 4582675.9008963311
• The cube root of 21000918412656 is 27589.6439533261

Scales and comparisons

• 21,000,918,412,656 seconds is equal to 667,764 years, 12 weeks, 5 days, 7 hours, 57 minutes, 36 seconds.
• To count from 1 to 21,000,918,412,656 would take you about one million, six hundred sixty-nine thousand, four hundred ten 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 21000918412656 cubic inches would be around 2299.1 feet tall.

Recreational maths with 21000918412656

• 21000918412656 backwards is 65621481900012
• The number of decimal digits it has is: 14
• The sum of 21000918412656's digits is 45
• More coming soon!