81012381401640

Names of 81012381401640

• Cardinal: 81012381401640 can be written as Eighty-one trillion, twelve billion, three hundred eighty-one million, four hundred one thousand, six hundred forty.

Scientific notation

• Scientific notation: 8.101238140164 × 10¹³

Factors of 81012381401640

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 8561

Divisors of 81012381401640

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 20 24 26 29 30 39 40 52 58 60 65 67 78 87 104 116 120 130 134 145 156 169 174 195 201 232 251 260 268 290 312 335 338 348 377 390 402 435 502 507 520 536 580 670 676 696 753 754 780 804 845 870 871 1004 1005 1014 1131 1160 1255 1340 1352 1506 1508 1560 1608 1690 1740 1742 1885 1943 2008 2010 2028 2262 2510 2535 2613 2680 3012 3016 3263 3380 3480 3484 3765 3770 3886 4020 4056 4355 4524 4901 5020 5070 5226 5655 5829 6024 6526 6760 6968 7279 7530 7540 7772 8040 8191 8710 9048 9715 9789 9802 10040 10140 10452 11310 11323 11658 13052 13065 14558 14703 15060 15080 15544 16315 16382 16817 17420 19430 19578 19604 20280 20904 21837 22620 22646 23316 24505 24573 25259 26104 26130 29116 29145 29406 30120 32630 32764 33634 33969 34840 36395 38860 39156 39208 40955 42419 43674 45240 45292 46632 48945 49010 49146 50451 50518 52260 56615 58232 58290 58812 65260 65528 67268 67938 72790 73515 75777 77720 78312 81910 84085 84838 87348 90584 94627 97890 98020 98292 100902 101036 104520 106483 109185 113230 116580 117624 122865 126295 127257 130520 134536 135876 145580 147030 151554 163820 168170 169676 169845 174696 189254 195780 196040 196584 201804 202072 212095 212966 218370 218621 226460 233160 237539 245730 252255 252590 254514 271752 283881 291160 294060 303108 319449 327640 328367 336340 339352 339690 378508 378885 391560 403608 424190 425932 436740 437242 452920 473135 475078 487693 491460 504510 505180 509028 532415 548797 567762 588120 606216 636285 638898 655863 656734 672680 679380 712617 757016 757770 848380 851864 873480 874484 946270 950156 975386 982920 985101 1009020 1010360 1018056 1064830 1093105 1097594 1135524 1187695 1230151 1272570 1277796 1311726 1313468 1358760 1384279 1419405 1425234 1463079 1515540 1597245 1641835 1646391 1696760 1748968 1892540 1900312 1950772 1970202 2018040 2055941 2129660 2186210 2195188 2271048 2375390 2438465 2460302 2545140 2555592 2623452 2626936 2743985 2768558 2838810 2842073 2850468 2926158 3031080 3088007 3194490 3279315 3283670 3292782 3563085 3690453 3785080 3901544 3940404 4111882 4152837 4259320 4372420 4390376 4750780 4876930 4920604 4925505 5090280 5246904 5487970 5537116 5677620 5684146 5700936 5852316 6150755 6167823 6176014 6340009 6388980 6558630 6567340 6585564 6921395 7126170 7134361 7315395 7380906 7880808 8223764 8231955 8305674 8526219 8744840 9264021 9501560 9753860 9841208 9851010 10279705 10975940 11074232 11355240 11368292 11704632 12301510 12335646 12352028 12680018 12777960 13117260 13134680 13171128 13842790 14210365 14252340 14268722 14630790 14761812 15440035 15915113 16447528 16463910 16611348 17052438 18452265 18528042 19020027 19507720 19702020 20559410 20764185 21403083 21951880 22736584 24603020 24671292 24704056 25360036 26234520 26727233 27685580 28420730 28504680 28537444 29261580 29523624 30839115 30880070 31700045 31830226 32927820 33222696 34104876 35671805 36904530 37056084 38040054 39404040 40144091 41118820 41528370 42631095 42806166 46320105 47745339 49206040 49342584 50720072 53454466 55371160 56841460 57074888 58523160 59622289 61678230 61760140 63400090 63660452 65855640 68209752 71343610 73809060 74112168 76080108 79575565 80181699 80288182 82237640 82420117 83056740 85262190 85612332 92640210 92746693 95100135 95490678 106908932 107015415 113682920 119244578 120432273 123356460 123520280 126800180 127320904 133636165 137748047 142687220 147618120 152160216 159151130 160363398 160576364 164840234 166113480 170524380 171224664 178866867 185280420 185493386 190200270 190981356 200720455 206896469 213817864 214030830 238489156 238726695 240864546 246712920 247260351 253600360 267272330 275496094 278240079 285374440 298111445 318302260 320726796 321152728 329680468 341048760 347454029 357733734 370560840 370986772 380400540 381962712 400908495 401440910 412100585 413244141 413792938 428061660 463733465 476978312 477453390 481729092 494520702 534544660 550992188 556480158 596222890 602161365 620689407 636604520 641453592 659360936 688740235 694908058 715467468 741973544 760801080 775089757 801816990 802881820 824201170 826488282 827585876 856123320 894334335 927466930 954906780 963458184 989041404 1034482345 1042362087 1069089320 1101984376 1112960316 1192445780 1204322730 1236301755 1241378814 1377480470 1389816116 1391200395 1430934936 1550179514 1603633980 1605763640 1648402340 1652976564 1655171752 1737270145 1788668670 1790724611 1854933860 1909813560 1978082808 2066220705 2068964690 2084724174 2225920632 2325269271 2384891560 2408645460 2472603510 2482757628 2689654097 2754960940 2779632232 2782400790 3100359028 3103447035 3207267960 3296804680 3305953128 3474540290 3577337340 3581449222 3709867720 3875448785 3994693363 4132441410 4137929380 4169448348 4650538542 4817290920 4945207020 4965515256 5211810435 5372173833 5379308194 5509921880 5564801580 6200718056 6206894070 6949080580 7154674680 7162898444 7750897570 7989386726 8068962291 8264882820 8275858760 8338896696 8953623055 9301077084 9890414040 10076166841 10423620870 10744347666 10758616388 11129603160 11626346355 11984080089 12413788140 13448270485 13898161160 14325796888 15501795140 15978773452 16137924582 16529765640 17907246110 18602154168 19973466815 20152333682 20847241740 21488695332 21517232776 23252692710 23279419943 23968160178 24827576280 26860869165 26896540970 30228500523 31003590280 31957546904 32275849164 35814492220 39946933630 40304667364 40344811455 41694483480 42977390664 46505385420 46558839886 47936320356 50380834205 51931013719 53721738330 53793081940 59920400445 60457001046 64551698328 69838259829 71628984440 79893867260 80609334728 80689622910 93010770840 93117679772 95872640712 100761668410 103862027438 107443476660 107586163880 116397099715 119840800890 120914002092 139676519658 151142502615 155793041157 159787734520 161379245820 186235359544 201523336820 207724054876 214886953320 232794199430 239681601780 241828004184 259655068595 279353039316 302285005230 311586082314 322758491640 349191299145 403046673640 415448109752 465588398860 479363203560 519310137190 558706078632 604570010460 623172164628 675103178347 698382598290 778965205785 931176797720 1038620274380 1209140020920 1246344329256 1350206356694 1396765196580 1557930411570 2025309535041 2077240548760 2700412713388 2793530393160 3115860823140 3375515891735 4050619070082 5400825426776 6231721646280 6751031783470 8101238140164 10126547675205 13502063566940 16202476280328 20253095350410 27004127133880 40506190700820 81012381401640
• Sum of all divisors σ(n): 277443300556800
• Sum of proper divisors (its aliquot sum) s(n): 196430919155160
• 81012381401640 is an abundant number, because the sum of its proper divisors (196430919155160) is greater than itself. Its abundance is 115418537753520

Bases of 81012381401640

• Binary: 10010011010111000101010001101110100001000101000₂
• Hexadecimal: 0x49AE2A374228
• Base-36: SPSKO7INC

Squares and roots of 81012381401640

• 81012381401640 squared (81012381401640²) is 6563005940364786570994689600
• 81012381401640 cubed (81012381401640³) is 531684740382061074561218221226244730944000
• The square root of 81012381401640 is 9000687.8293628205
• The cube root of 81012381401640 is 43269.6915735943

Scales and comparisons

• 81,012,381,401,640 seconds is equal to 2,575,943 years, 7 weeks, 2 days, 6 hours, 14 minutes.
• To count from 1 to 81,012,381,401,640 would take you about six million, four hundred thirty-nine thousand, eight hundred fifty-seven 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 81012381401640 cubic inches would be around 3605.8 feet tall.

Recreational maths with 81012381401640

• 81012381401640 backwards is 04610418321018
• 81012381401640 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81012381401640's digits is 39
• More coming soon!