81142064640

Names of 81142064640

• Cardinal: 81142064640 can be written as Eighty-one billion, one hundred forty-two million, sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 8.114206464 × 10¹⁰

Factors of 81142064640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 259

Divisors of 81142064640

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 28 30 32 35 36 39 40 42 45 48 52 56 60 63 64 65 70 72 78 80 84 90 91 96 104 105 112 117 120 126 128 130 140 144 156 160 168 169 180 182 192 195 208 210 224 229 234 240 252 256 260 273 280 288 312 315 320 336 338 360 364 384 390 416 420 448 455 458 468 480 504 507 512 520 546 560 576 585 624 630 640 672 676 687 720 728 768 780 819 832 840 845 896 910 916 936 960 1008 1014 1040 1092 1120 1145 1152 1170 1183 1248 1260 1280 1344 1352 1365 1374 1440 1456 1521 1536 1560 1603 1638 1664 1680 1690 1792 1820 1832 1872 1920 2016 2028 2061 2080 2184 2197 2240 2290 2304 2340 2366 2496 2520 2535 2560 2688 2704 2730 2748 2880 2912 2977 3042 3120 3206 3276 3328 3360 3380 3435 3549 3584 3640 3664 3744 3840 4032 4056 4095 4122 4160 4368 4394 4480 4580 4608 4680 4732 4809 4992 5040 5070 5376 5408 5460 5496 5760 5824 5915 5954 6084 6240 6412 6552 6591 6656 6720 6760 6870 7098 7280 7328 7488 7605 7680 8015 8064 8112 8190 8244 8320 8736 8788 8931 8960 9160 9360 9464 9618 9984 10080 10140 10305 10647 10752 10816 10920 10985 10992 11520 11648 11830 11908 12168 12480 12824 13104 13182 13440 13520 13740 14196 14427 14560 14656 14885 14976 15210 15379 16030 16128 16224 16380 16488 16640 17472 17576 17745 17862 17920 18320 18720 18928 19236 19773 19968 20160 20280 20610 20839 21294 21632 21840 21970 21984 23040 23296 23660 23816 24045 24336 24960 25648 26208 26364 26793 26880 27040 27480 28392 28854 29120 29312 29770 29952 30420 30758 32060 32256 32448 32760 32955 32976 33280 34944 35152 35490 35724 36640 37440 37856 38472 38701 39546 40320 40560 41220 41678 42588 43264 43680 43940 43968 44655 46137 46592 47320 47632 48090 48672 49920 51296 52416 52728 53235 53586 53760 54080 54960 56784 57708 58240 58624 59540 59904 60840 61516 62517 64120 64896 65520 65910 65952 69888 70304 70980 71448 72135 73280 74880 75712 76895 76944 77402 79092 80640 81120 82440 83356 85176 86528 87360 87880 87936 89310 92274 94640 95264 96180 97344 98865 99840 102592 104195 104832 105456 106470 107172 108160 109920 113568 115416 116103 116480 117248 119080 121680 123032 125034 128240 129792 131040 131820 131904 133965 138411 139776 140608 141960 142896 144270 146560 149760 151424 153790 153888 154804 158184 161280 162240 164880 166712 170352 174720 175760 175872 178620 184548 187551 189280 190528 192360 193505 194688 197730 205184 208390 209664 210912 212940 214344 216320 219840 227136 230685 230832 232206 232960 238160 243360 246064 250068 256480 259584 262080 263640 263808 267930 270907 276822 281216 283920 285792 288540 293120 299520 302848 307580 307776 309608 312585 316368 324480 329760 333424 340704 348309 349440 351520 351744 357240 369096 375102 378560 381056 384720 387010 389376 395460 410368 416780 419328 421824 425880 428688 432640 439680 454272 461370 461664 464412 476320 486720 492128 500136 503113 512960 524160 527280 527616 535860 541814 553644 562432 567840 571584 577080 580515 586240 605696 615160 615552 619216 625170 632736 648960 659520 666848 681408 692055 696618 698880 703040 714480 738192 750204 757120 762112 769440 774020 778752 790920 812721 820736 833560 843648 851760 857376 879360 908544 922740 923328 928824 937755 952640 973440 984256 1000272 1006226 1025920 1048320 1054560 1055232 1071720 1083628 1107288 1124864 1135680 1143168 1154160 1161030 1230320 1231104 1238432 1250340 1265472 1297920 1319040 1333696 1354535 1362816 1384110 1393236 1406080 1428960 1476384 1500408 1509339 1514240 1524224 1538880 1548040 1581840 1625442 1667120 1687296 1703520 1714752 1741545 1758720 1817088 1845480 1846656 1857648 1875510 1905280 1946880 1968512 2000544 2012452 2051840 2096640 2109120 2143440 2167256 2214576 2271360 2286336 2308320 2322060 2438163 2460640 2462208 2476864 2500680 2515565 2530944 2638080 2667392 2709070 2725632 2768220 2786472 2812160 2857920 2952768 3000816 3018678 3028480 3077760 3096080 3163680 3250884 3334240 3374592 3407040 3429504 3483090 3521791 3690960 3693312 3715296 3751020 3810560 3893760 3937024 4001088 4024904 4063605 4103680 4218240 4286880 4334512 4429152 4528017 4542720 4572672 4616640 4644120 4876326 4921280 4953728 5001360 5031130 5061888 5276160 5334784 5418140 5451264 5536440 5572944 5624320 5715840 5905536 6001632 6037356 6155520 6192160 6327360 6501768 6668480 6814080 6859008 6966180 7043582 7381920 7386624 7430592 7502040 7546695 7621120 7874048 8002176 8049808 8127210 8436480 8573760 8669024 8858304 9056034 9085440 9233280 9288240 9752652 9842560 9907456 10002720 10062260 10123776 10565373 10669568 10836280 11072880 11145888 11431680 11811072 12003264 12074712 12190815 12311040 12384320 12654720 13003536 13336960 13628160 13718016 13932360 14087164 14763840 14861184 15004080 15093390 16004352 16099616 16254420 16872960 17147520 17338048 17608955 17716608 18112068 18466560 18576480 19505304 19685120 19814912 20005440 20124520 21130746 21672560 22145760 22291776 22640085 22863360 23622144 24006528 24149424 24381630 24768640 25309440 26007072 26673920 27256320 27864720 28174328 29527680 29722368 30008160 30186780 31696119 32008704 32199232 32508840 34295040 34676096 35217910 35433216 36224136 36933120 37152960 39010608 39370240 40010880 40249040 42261492 43345120 44291520 44583552 45280170 48013056 48298848 48763260 49537280 50618880 52014144 52826865 53347840 55729440 56348656 59055360 59444736 60016320 60373560 63392238 64398464 65017680 68590080 69352192 70435820 70866432 72448272 74305920 78021216 80021760 80498080 84522984 86690240 88583040 89167104 90560340 96026112 96597696 97526520 99074560 104028288 105653730 111458880 112697312 118110720 120032640 120747120 126784476 128796928 130035360 138704384 140871640 144896544 148611840 156042432 158480595 160043520 160996160 169045968 173380480 177166080 178334208 181120680 193195392 195053040 208056576 211307460 222917760 225394624 240065280 241494240 253568952 257593856 260070720 281743280 289793088 297223680 312084864 316961190 321992320 338091936 346760960 354332160 362241360 386390784 390106080 416113152 422614920 445835520 450789248 480130560 482988480 507137904 520141440 563486560 579586176 624169728 633922380 643984640 676183872 693521920 724482720 772781568 780212160 845229840 891671040 901578496 965976960 1014275808 1040282880 1126973120 1159172352 1248339456 1267844760 1287969280 1352367744 1448965440 1560424320 1690459680 1803156992 1931953920 2028551616 2080565760 2253946240 2318344704 2535689520 2704735488 2897930880 3120848640 3380919360 3863907840 4057103232 4507892480 5071379040 5409470976 5795861760 6241697280 6761838720 8114206464 9015784960 10142758080 11591723520 13523677440 16228412928 20285516160 27047354880 40571032320 81142064640
• Sum of all divisors σ(n): 349433884800
• Sum of proper divisors (its aliquot sum) s(n): 268291820160
• 81142064640 is an abundant number, because the sum of its proper divisors (268291820160) is greater than itself. Its abundance is 187149755520

Bases of 81142064640

• Binary: 1001011100100011100011010011000000000₂
• Hexadecimal: 0x12E471A600
• Base-36: 119XW1S0

Squares and roots of 81142064640

• 81142064640 squared (81142064640²) is 6584034654041938329600
• 81142064640 cubed (81142064640³) is 534242165490270997211296825344000
• The square root of 81142064640 is 284854.4622083355
• The cube root of 81142064640 is 4329.2767726081

Scales and comparisons

• 81,142,064,640 seconds is equal to 2,580 years, 3 weeks, 3 days, 6 hours, 24 minutes.
• To count from 1 to 81,142,064,640 would take you about five thousand, one hundred sixty 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 81142064640 cubic inches would be around 360.8 feet tall.

Recreational maths with 81142064640

• 81142064640 backwards is 04646024118
• 81142064640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81142064640's digits is 36
• More coming soon!