81609900788000

Names of 81609900788000

• Cardinal: 81609900788000 can be written as Eighty-one trillion, six hundred nine billion, nine hundred million, seven hundred eighty-eight thousand.

Scientific notation

• Scientific notation: 8.1609900788 × 10¹³

Factors of 81609900788000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 903

Divisors of 81609900788000

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 23 25 26 32 40 46 50 52 65 80 92 100 104 115 125 127 130 160 184 200 208 230 250 254 260 299 325 368 400 416 460 500 508 520 575 598 635 650 733 736 800 920 1000 1016 1040 1150 1196 1270 1300 1466 1495 1625 1651 1840 2000 2032 2080 2300 2392 2540 2600 2875 2921 2932 2990 3175 3250 3302 3665 3680 4000 4064 4600 4784 5080 5200 5750 5842 5864 5980 6350 6500 6604 7330 7475 8255 9200 9529 9568 10160 10400 11500 11684 11728 11960 12700 13000 13208 14605 14660 14950 15875 16510 16859 18325 18400 19058 20320 23000 23368 23456 23920 25400 26000 26416 29210 29320 29900 31750 33020 33718 36650 37375 37973 38116 41275 46000 46736 47645 47840 50800 52000 52832 58420 58640 59800 63500 66040 67436 73025 73300 74750 75946 76232 82550 84295 91625 92000 93091 93472 95290 101600 116840 117280 119600 127000 132080 134872 146050 146600 149500 151892 152464 165100 168590 183250 186182 189865 190580 206375 219167 233680 238225 239200 254000 264160 269744 292100 293200 299000 303784 304928 330200 337180 365125 366500 372364 379730 381160 412750 421475 438334 465455 467360 476450 508000 537289 539488 584200 586400 598000 607568 660400 674360 730250 733000 744728 759460 762320 825500 842950 876668 930910 949325 952900 1074578 1095835 1168400 1191125 1196000 1210183 1215136 1320800 1348720 1460500 1466000 1489456 1518920 1524640 1651000 1685900 1753336 1861820 1898650 1905800 2107375 2141093 2149156 2191670 2327275 2336800 2382250 2420366 2686445 2697440 2921000 2932000 2978912 3037840 3302000 3371800 3506672 3723640 3797300 3811600 4214750 4282186 4298312 4383340 4654550 4746625 4764500 4840732 5372890 5479175 5842000 6050915 6075680 6604000 6743600 6984757 7013344 7447280 7594600 7623200 8429500 8564372 8596624 8766680 9309100 9493250 9529000 9681464 10705465 10745780 10958350 11636375 11684000 12101830 12357647 13432225 13487200 13969514 14894560 15189200 16859000 17128744 17193248 17533360 18618200 18986500 19058000 19362928 21410930 21491560 21916700 23272750 24203660 24715294 26864450 27395875 27834209 27939028 30254575 30378400 33718000 34257488 34923785 35066720 37236400 37973000 38116000 38725856 42821860 42983120 43833400 46545500 48407320 49430588 53527325 53728900 54791750 55668418 55878056 60509150 61788235 67161125 67436000 68235703 68514976 69847570 74472800 75946000 85643720 85966240 87666800 93091000 96814640 98861176 107054650 107457800 109583500 111336836 111756112 121018300 123576470 134322250 136471406 139171045 139695140 151272875 151892000 160649411 171287440 174618925 175333600 186182000 193629280 197722352 214109300 214915600 219167000 222673672 223512224 242036600 247152940 267636625 268644500 272942812 278342090 279390280 302545750 308941175 321298822 341178515 342574880 349237850 372364000 395444704 428218600 429831200 438334000 445347344 484073200 494305880 535273250 537289000 545885624 556684180 558780560 605091500 617882350 642597644 682357030 695855225 698475700 803247055 856437200 873094625 876668000 887064139 890694688 968146400 988611760 1070546500 1074578000 1091771248 1113368360 1117561120 1210183000 1235764700 1285195288 1364714060 1391710450 1396951400 1544705875 1569421169 1606494110 1705892575 1712874400 1746189250 1774128278 1977223520 2141093000 2149156000 2183542496 2226736720 2420366000 2471529400 2570390576 2729428120 2783420900 2793902800 3089411750 3138842338 3212988220 3411785150 3479276125 3492378500 3548256556 4016235275 4282186000 4435320695 4453473440 4840732000 4943058800 5140781152 5458856240 5566841800 5587805600 6178823500 6277684676 6425976440 6823570300 6958552250 6984757000 7096513112 7847105845 8032470550 8529462875 8564372000 8870641390 9886117600 10917712480 11133683600 12357647000 12555369352 12851952880 13647140600 13917104500 13969514000 14193026224 15694211690 16064941100 17058925750 17741282780 20081176375 20402475197 22176603475 22267367200 24715294000 25110738704 25703905760 27294281200 27834209000 27939028000 28386052448 31388423380 32129882200 34117851500 35482565560 39235529225 40162352750 40804950394 44353206950 49430588000 50221477408 54588562400 55668418000 62776846760 64259764400 68235703000 70965131120 78471058450 80324705500 81609900788 88706413900 102012375985 110883017375 111336836000 125553693520 128519528800 136471406000 141930262240 156942116900 160649411000 163219801576 177412827800 196177646125 204024751970 221766034750 251107387040 272942812000 313884233800 321298822000 326439603152 354825655600 392355292250 408049503940 443532069500 510061879925 627768467600 642597644000 652879206304 709651311200 784710584500 816099007880 887064139000 1020123759850 1255536935200 1569421169000 1632198015760 1774128278000 2040247519700 2550309399625 3138842338000 3264396031520 3548256556000 4080495039400 5100618799250 6277684676000 8160990078800 10201237598500 16321980157600 20402475197000 40804950394000 81609900788000
• Sum of all divisors σ(n): 227412973412352
• Sum of proper divisors (its aliquot sum) s(n): 145803072624352
• 81609900788000 is an abundant number, because the sum of its proper divisors (145803072624352) is greater than itself. Its abundance is 64193171836352

Bases of 81609900788000

• Binary: 10010100011100101001001001001011000100100100000₂
• Hexadecimal: 0x4A3949258920
• Base-36: SXF2JTNVK

Squares and roots of 81609900788000

• 81609900788000 squared (81609900788000²) is 6660175906627203020944000000
• 81609900788000 cubed (81609900788000³) is 543536294970473990241173726103872000000000
• The square root of 81609900788000 is 9033819.8337137541
• The cube root of 81609900788000 is 43375.8118716007

Scales and comparisons

• 81,609,900,788,000 seconds is equal to 2,594,942 years, 21 weeks, 1 day, 21 hours, 33 minutes, 20 seconds.
• To count from 1 to 81,609,900,788,000 would take you about six million, four hundred eighty-seven thousand, three hundred fifty-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 81609900788000 cubic inches would be around 3614.7 feet tall.

Recreational maths with 81609900788000

• 81609900788000 backwards is 00088700990618
• The number of decimal digits it has is: 14
• The sum of 81609900788000's digits is 56
• More coming soon!