81812865196800

Names of 81812865196800

• Cardinal: 81812865196800 can be written as Eighty-one trillion, eight hundred twelve billion, eight hundred sixty-five million, one hundred ninety-six thousand, eight hundred.

Scientific notation

• Scientific notation: 8.18128651968 × 10¹³

Factors of 81812865196800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 7263

Divisors of 81812865196800

• Number of divisors d(n): 486
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 75 80 81 90 96 100 108 120 128 135 144 150 160 162 180 192 200 216 225 240 243 256 270 288 300 320 324 360 384 400 405 432 450 480 486 540 576 600 640 648 675 720 768 800 810 864 900 960 972 1080 1152 1200 1215 1280 1296 1350 1440 1600 1620 1728 1800 1920 1944 2025 2160 2304 2400 2430 2592 2700 2880 3200 3240 3456 3600 3840 3888 4050 4320 4800 4860 5184 5400 5760 6075 6400 6480 6912 7200 7253 7776 8100 8640 9600 9720 10368 10800 11520 12150 12960 14400 14506 15552 16200 17280 19200 19440 20736 21600 21759 24300 25920 28800 29012 31104 32400 34560 36265 38880 43200 43518 48600 51840 57600 58024 62208 64800 65277 72530 77760 86400 87036 97200 103680 108795 116048 129600 130554 145060 155520 172800 174072 181325 194400 195831 217590 232096 259200 261108 290120 311040 326385 348144 362650 388800 391662 435180 464192 518400 522216 543975 580240 587493 652770 696288 725300 777600 783324 870360 928384 979155 1044432 1087950 1160480 1174986 1305540 1392576 1450600 1555200 1566648 1631925 1740720 1762479 1856768 1958310 2088864 2175900 2320960 2349972 2611080 2785152 2901200 2937465 3133296 3263850 3481440 3524958 3916620 4177728 4351800 4641920 4699944 4895775 5222160 5570304 5802400 5874930 6266592 6527700 6962880 7049916 7833240 8355456 8703600 8812395 9283840 9399888 9791550 10444320 11604800 11749860 12533184 13055400 13925760 14099832 14687325 15666480 16710912 17407200 17624790 18799776 19583100 20888640 23209600 23499720 25066368 26110800 27851520 28199664 29374650 31332960 34814400 35249580 37599552 39166200 41777280 44061975 46419200 46999440 50132736 52221600 52606009 56399328 58749300 62665920 69628800 70499160 75199104 78332400 83554560 88123950 93998880 104443200 105212018 112798656 117498600 125331840 139257600 140998320 150398208 156664800 157818027 176247900 187997760 208886400 210424036 225597312 234997200 250663680 263030045 281996640 313329600 315636054 352495800 375995520 417772800 420848072 451194624 469994400 473454081 526060090 563993280 626659200 631272108 704991600 751991040 789090135 841696144 939988800 946908162 1052120180 1127986560 1253318400 1262544216 1315150225 1409983200 1420362243 1578180270 1683392288 1879977600 1893816324 2104240360 2255973120 2367270405 2525088432 2630300450 2819966400 2840724486 3156360540 3366784576 3759955200 3787632648 3945450675 4208480720 4261086729 4734540810 5050176864 5260600900 5639932800 5681448972 6312721080 6733569152 7101811215 7575265296 7890901350 8416961440 8522173458 9469081620 10100353728 10521201800 11279865600 11362897944 11836352025 12625442160 12783260187 13467138304 14203622430 15150530592 15781802700 16833922880 17044346916 18938163240 20200707456 21042403600 21305433645 22725795888 23672704050 25250884320 25566520374 28407244860 30301061184 31563605400 33667845760 34088693832 35509056075 37876326480 40401414912 42084807200 42610867290 45451591776 47345408100 50501768640 51133040748 56814489720 60602122368 63127210800 63916300935 67335691520 68177387664 71018112150 75752652960 84169614400 85221734580 90903183552 94690816200 101003537280 102266081496 106527168225 113628979440 121204244736 126254421600 127832601870 136354775328 142036224300 151505305920 168339228800 170443469160 181806367104 189381632400 202007074560 204532162992 213054336450 227257958880 252508843200 255665203740 272709550656 284072448600 303010611840 319581504675 336678457600 340886938320 363612734208 378763264800 409064325984 426108672900 454515917760 505017686400 511330407480 545419101312 568144897200 606021223680 639163009350 681773876640 757526529600 818128651968 852217345800 909031835520 1010035372800 1022660814960 1090838202624 1136289794400 1278326018700 1363547753280 1515053059200 1636257303936 1704434691600 1818063671040 2045321629920 2272579588800 2556652037400 2727095506560 3030106118400 3272514607872 3408869383200 4090643259840 4545159177600 5113304074800 5454191013120 6817738766400 8181286519680 9090318355200 10226608149600 13635477532800 16362573039360 20453216299200 27270955065600 40906432598400 81812865196800
• Sum of all divisors σ(n): 303374598502612
• Sum of proper divisors (its aliquot sum) s(n): 221561733305812
• 81812865196800 is an abundant number, because the sum of its proper divisors (221561733305812) is greater than itself. Its abundance is 139748868109012

Bases of 81812865196800

• Binary: 10010100110100010001010110001001010001100000000₂
• Hexadecimal: 0x4A688AC4A300
• Base-36: T00B7LC00

Squares and roots of 81812865196800

• 81812865196800 squared (81812865196800²) is 6693344911709768702730240000
• 81812865196800 cubed (81812865196800³) is 547601724977398504682176737234911232000000
• The square root of 81812865196800 is 9045046.4452538881
• The cube root of 81812865196800 is 43411.7407546917

Scales and comparisons

• 81,812,865,196,800 seconds is equal to 2,601,396 years, 2 weeks, 4 days.
• To count from 1 to 81,812,865,196,800 would take you about six million, five hundred three thousand, four hundred ninety 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 81812865196800 cubic inches would be around 3617.6 feet tall.

Recreational maths with 81812865196800

• 81812865196800 backwards is 00869156821818
• The number of decimal digits it has is: 14
• The sum of 81812865196800's digits is 63
• More coming soon!