81989146374476355

Names of 81989146374476355

• Cardinal: 81989146374476355 can be written as Eighty-one quadrillion, nine hundred eighty-nine trillion, one hundred forty-six billion, three hundred seventy-four million, four hundred seventy-six thousand, three hundred fifty-five.

Scientific notation

• Scientific notation: 8.1989146374476355 × 10¹⁶

Factors of 81989146374476355

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 149

Divisors of 81989146374476355

• Number of divisors d(n): 648
• Complete list of divisors:
  1 3 5 7 9 15 21 31 35 45 49 63 93 103 105 147 155 217 245 279 309 315 343 441 465 515 651 721 735 927 961 1029 1085 1395 1519 1545 1715 1953 2163 2205 2401 2883 3087 3193 3255 3605 4557 4635 4805 5047 5145 6489 6727 7203 7595 8649 9579 9765 10609 10633 10815 12005 13671 14415 15141 15435 15965 16807 20181 21609 22351 22785 25235 28737 29791 31827 31899 32445 33635 35329 36015 43245 45423 47089 47895 50421 53045 53165 60543 67053 68355 74263 74431 75705 84035 89373 95481 95697 98983 100905 105987 108045 111755 117649 141267 143685 148955 151263 156457 159135 159495 176645 201159 208537 222789 223293 227115 235445 247303 252105 268119 296949 302715 317961 328879 329623 335265 352947 371315 372155 423801 446865 469371 477405 478485 494915 519841 521017 529935 588245 625611 668367 669879 692881 706335 741909 756315 782285 823543 890847 986637 988869 1005795 1042685 1058841 1095199 1113945 1116465 1236515 1340595 1408113 1459759 1484745 1559523 1563051 1589805 1644395 1648115 1731121 1764735 1876833 2078643 2119005 2225727 2302153 2307361 2346855 2470629 2599205 2605085 2959911 2966607 3068473 3128055 3285597 3341835 3349395 3464405 3638887 3647119 3709545 4117715 4379277 4454235 4678569 4689153 4850167 4933185 4944345 5193363 5294205 5475995 5764801 6235929 6906459 6922083 7040565 7298795 7411887 7666393 7797615 7815255 8655605 9205419 9384165 9856791 10195249 10218313 10393215 10916661 10941357 11128635 11510765 11536805 12117847 12353145 13137831 14550501 14799555 14833035 15342365 15580089 16115071 16151527 16427985 17294403 18194435 18235595 20719377 20766249 21479311 21896385 22999179 23392845 23445765 24250835 25472209 25529833 25966815 27616257 28824005 30585747 30654939 31179645 32749983 32824071 33951169 34532295 34610415 36353541 37059435 38331965 43651503 46027095 48345213 48454581 49283955 50976245 51091565 51883209 53664751 54583305 54706785 60589235 64437933 65689155 68997537 71366743 71528191 72752505 76416627 76589499 77900445 80575355 80757635 84824929 86472015 91757241 91964817 101853507 103596885 103831245 107396555 109060623 112805497 113060689 114995895 127361045 127649165 138081285 145035639 145363743 150355177 152928735 153274695 160994253 163749915 164120355 169755845 178305463 178708831 181767705 193313799 214100229 214584573 218257515 229249881 229768497 237658183 241726065 242272905 254474787 259416045 268323755 305560521 316052719 322189665 338416491 339182067 344987685 356833715 357640955 375653257 382083135 382947495 424124645 451065531 458786205 459824085 482982759 499567201 500697337 509267535 534916389 536126493 545303115 564027485 565303445 593774503 642300687 643753719 712974549 725178195 726818715 751775885 763424361 789638479 791424823 804971265 891527315 893544155 948158157 966568995 1015249473 1017546201 1052486239 1070501145 1072922865 1126959771 1146249405 1148842485 1188290915 1248138241 1272373935 1353196593 1498701603 1502092011 1527802605 1580263595 1604749167 1608379479 1663607281 1692082455 1695910335 1781323509 1878266285 2138923647 2212369033 2255327655 2368915437 2374274469 2414913795 2497836005 2503486685 2629572799 2674581945 2680632465 2844474471 2968872515 3157458717 3211503435 3218768595 3380879313 3496970407 3504881359 3564872745 3744414723 3817121805 3948192395 3957124115 4496104809 4506276033 4740790785 4990821843 5076247365 5087731005 5262431195 5343970527 5527469353 5539973761 5634798855 6240691205 6637107099 6765982965 7106746311 7122823407 7367403673 7493508015 7510460055 7888718397 8023745835 8041897395 8318036405 8736967687 8906617545 9472376151 10490911221 10514644077 10694618235 11061845165 11233244169 11645250967 11844577185 11871372345 13147863995 14222372355 14972465529 15486583231 15787293585 16582408059 16619921283 16904396565 17484852035 17524406795 18407009593 18722073615 19911321297 22102211019 22480524045 22531380165 23666155191 24478792849 24534169513 24954109215 26210903061 26719852635 27637346765 27699868805 31472733663 31543932231 33185535495 34935752901 35533731555 35614117035 36837018365 38692285471 39443591985 43684838435 46459749693 47361880755 49747224177 49859763849 51571825711 52454556105 52573220385 55221028779 56166220845 58226254835 61158773809 66306633057 73436378547 73602508539 74862327645 77432916155 78632709183 81516756769 82912040295 83099606415 92035047965 99556606485 104807258703 108406082617 110511055095 116076856413 118330775955 122393964245 122670847565 131054515305 139379249079 154715477133 157363668315 157719661155 165663086337 171351549943 171739186591 174678764505 183476321427 193461427355 220309135641 220807525617 232298748465 244550270307 248736120885 249298819245 257859128555 270845998297 276105143895 305793869045 325218247851 331533165285 348230569239 361002779977 367181892735 368012542695 393163545915 407583783845 464146431399 514054649829 515217559773 524036293515 542030413085 550428964281 570617297383 580384282065 696896245395 733650810921 758842578319 773577385665 812537994891 828315431685 856757749715 858695932955 917381607135 975654743553 1083008339931 1101545678205 1104037628085 1199460849601 1222751351535 1354229991485 1542163949487 1545652679319 1626091239255 1711851892149 1741152846195 1805013899885 1895921988079 2276527734957 2320732156995 2437613984673 2527019459839 2570273249145 2576087798865 2752144821405 2853086486915 3249025019793 3598382548803 3668254054605 3794212891595 4062689974455 4878273717765 5135555676447 5311898048233 5415041699655 5687765964237 5997304248005 6829583204871 7581058379517 7710819747435 7728263396595 8396225947207 8559259460745 9479609940395 10795147646409 11382638674785 12188069923365 12635097299195 15935694144699 16245125098965 17063297892711 17689136218873 17991912744015 22743175138551 25188677841621 25677778382235 26559490241165 28438829821185 34147916024355 37183286337631 37905291897585 41981129736035 47807082434097 53067408656619 53975738232045 58773581630449 75566033524863 79678470723495 85316489463555 88445681094365 111549859012893 113715875692755 125943389208105 159202225969857 176320744891347 185916431688155 239035412170485 260283004363417 265337043283095 293867908152245 334649577038679 377830167624315 528962234674041 557749295064465 780849013090251 796011129849285 881603724456735 1301415021817085 1673247885193395 1821981030543919 2342547039270753 2644811173370205 3904245065451255 5465943091631757 9109905152719595 11712735196353765 16397829274895271 27329715458158785 81989146374476355
• Sum of all divisors σ(n): 173006275601966976
• Sum of proper divisors (its aliquot sum) s(n): 91017129227490621
• 81989146374476355 is an abundant number, because the sum of its proper divisors (91017129227490621) is greater than itself. Its abundance is 9027982853014266

Bases of 81989146374476355

• Binary: 100100011010010001011000110111001000101101001001001000011₂
• Hexadecimal: 0x12348B1B9169243
• Base-36: MFAQ5VAC3ER

Squares and roots of 81989146374476355

• 81989146374476355 squared (81989146374476355²) is 6722220123215309227518200454086025
• 81989146374476355 cubed (81989146374476355³) is 551149089643750466939456834406206802490129498438875
• The square root of 81989146374476355 is 286337469.3861708959
• The cube root of 81989146374476355 is 434428.9796924215

Scales and comparisons

• 81,989,146,374,476,355 seconds is equal to 2,607,001,245 years, 32 weeks, 4 days, 6 hours, 59 minutes, 15 seconds.
• To count from 1 to 81,989,146,374,476,355 would take you about seven billion, eight hundred twenty-one million, three thousand, seven hundred thirty-six 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 81989146374476355 cubic inches would be around 36202.4 feet tall.

Recreational maths with 81989146374476355

• 81989146374476355 backwards is 55367447364198918
• The number of decimal digits it has is: 17
• The sum of 81989146374476355's digits is 90
• More coming soon!