81972379216000

Names of 81972379216000

• Cardinal: 81972379216000 can be written as Eighty-one trillion, nine hundred seventy-two billion, three hundred seventy-nine million, two hundred sixteen thousand.

Scientific notation

• Scientific notation: 8.1972379216 × 10¹³

Factors of 81972379216000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 190

Divisors of 81972379216000

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 25 26 28 32 35 40 50 52 56 64 65 70 80 91 100 104 112 125 128 130 140 160 163 169 175 182 200 208 224 250 260 280 320 325 326 338 350 364 400 416 448 455 500 520 560 640 650 652 676 700 728 800 815 832 845 875 896 910 1000 1040 1120 1141 1183 1300 1304 1352 1400 1456 1600 1625 1630 1664 1690 1750 1820 2000 2080 2119 2240 2275 2282 2366 2600 2608 2704 2800 2912 3200 3250 3260 3380 3500 3640 4000 4075 4160 4225 4238 4480 4550 4564 4732 5200 5216 5408 5600 5705 5824 5915 6500 6520 6760 7000 7280 8000 8150 8320 8450 8476 9100 9128 9464 10400 10432 10595 10816 11200 11375 11410 11648 11830 13000 13040 13520 14000 14560 14833 16000 16300 16900 16952 18200 18256 18928 20375 20800 20864 21125 21190 21632 22400 22750 22820 23660 26000 26080 26569 27040 27547 28000 28525 29120 29575 29666 32600 33800 33904 36400 36512 37856 40750 41600 42250 42380 45500 45640 47320 52000 52160 52975 53138 54080 55094 56000 57050 58240 59150 59332 65200 67600 67808 72800 73024 74165 75712 81500 84500 84760 91000 91280 94640 104000 104320 105950 106276 108160 110188 112000 114100 118300 118664 130400 132845 135200 135616 137735 142625 145600 146048 147875 148330 151424 163000 169000 169520 182000 182560 185983 189280 192829 208000 211900 212552 220376 228200 236600 237328 260800 264875 265690 270400 271232 275470 285250 291200 295750 296660 326000 338000 339040 345397 364000 365120 370825 371966 378560 385658 423800 425104 440752 456400 473200 474656 521600 529750 531380 540800 550940 570500 591500 593320 652000 664225 676000 678080 688675 690794 728000 730240 741650 743932 757120 771316 847600 850208 881504 912800 929915 946400 949312 964145 1059500 1062760 1101880 1141000 1183000 1186640 1304000 1328450 1352000 1356160 1377350 1381588 1456000 1483300 1487864 1542632 1695200 1700416 1726985 1763008 1825600 1854125 1859830 1892800 1898624 1928290 2119000 2125520 2203760 2282000 2366000 2373280 2417779 2608000 2656900 2704000 2754700 2763176 2966600 2975728 3085264 3321125 3390400 3400832 3443375 3453970 3526016 3651200 3708250 3719660 3785600 3856580 4238000 4251040 4330747 4407520 4490161 4564000 4649575 4732000 4746560 4820725 4835558 5313800 5509400 5526352 5933200 5951456 6170528 6642250 6780800 6886750 6907940 7416500 7439320 7713160 8476000 8502080 8634925 8661494 8815040 8980322 9128000 9299150 9464000 9493120 9641450 9671116 10627600 11018800 11052704 11866400 11902912 12088895 12341056 13284500 13773500 13815880 14833000 14878640 15426320 16952000 17004160 17269850 17322988 17630080 17960644 18256000 18598300 18928000 19282900 19342232 21255200 21653735 22037600 22105408 22450805 23247875 23732800 23805824 24103625 24177790 24682112 26569000 27547000 27631760 29666000 29757280 30315229 30852640 31431127 33904000 34539700 34645976 35921288 37196600 38565800 38684464 42510400 43174625 43307470 44075200 44210816 44901610 46495750 47465600 48207250 48355580 53138000 55094000 55263520 56299711 59332000 59514560 60444475 60630458 61705280 62862254 69079400 69291952 71842576 74393200 77131600 77368928 85020800 86349250 86614940 88150400 89803220 92991500 96414500 96711160 106276000 108268675 110188000 110527040 112254025 112599422 118664000 119029120 120888950 121260916 123410560 125724508 138158800 138583904 143685152 148786400 151576145 154263200 154737856 157155635 172698500 173229880 179606440 185983000 192829000 193422320 212552000 216537350 220376000 221054080 224508050 225198844 237328000 241777900 242521832 251449016 276317600 277167808 281498555 287370304 297572800 302222375 303152290 308526400 309475712 314311270 345397000 346459760 359212880 371966000 385658000 386844640 394097977 425104000 433074700 440752000 449016100 450397688 483555800 485043664 502898032 541343375 552635200 554335616 561270125 562997110 574740608 595145600 604444750 606304580 617052800 628622540 690794000 692919520 718425760 731896243 743932000 757880725 771316000 773689280 785778175 788195954 866149400 898032200 900795376 967111600 970087328 1005796064 1082686750 1105270400 1122540250 1125994220 1208889500 1212609160 1257245080 1381588000 1385839040 1407492775 1436851520 1463792486 1487864000 1515761450 1542632000 1547378560 1571556350 1576391908 1732298800 1796064400 1801590752 1934223200 1940174656 1970489885 2011592128 2165373500 2245080500 2251988440 2417779000 2425218320 2514490160 2763176000 2771678080 2814985550 2873703040 2927584972 2975728000 3031522900 3085264000 3143112700 3152783816 3464597600 3592128800 3603181504 3659481215 3789403625 3868446400 3880349312 3928890875 3940979770 4023184256 4330747000 4490161000 4503976880 4835558000 4850436640 5028980320 5123273701 5526352000 5629971100 5855169944 6063045800 6286225400 6305567632 6929195200 7037463875 7184257600 7206363008 7318962430 7578807250 7736892800 7857781750 7881959540 8661494000 8980322000 9007953760 9671116000 9700873280 9852449425 10057960640 10246547402 11259942200 11710339888 12126091600 12572450800 12611135264 13858390400 14074927750 14368515200 14637924860 15157614500 15715563500 15763919080 17322988000 17960644000 18015907520 18297406075 19342232000 19401746560 19704898850 20115921280 20493094804 22519884400 23420679776 24252183200 25144901600 25222270528 25616368505 28149855500 29275849720 30315229000 31431127000 31527838160 34645976000 35921288000 36031815040 36594812150 38684464000 39409797700 40986189608 45039768800 46841359552 48504366400 49262247125 50289803200 50444541056 51232737010 56299711000 58551699440 60630458000 62862254000 63055676320 69291952000 71842576000 73189624300 78819595400 81972379216 90079537600 91487030375 93682719104 97008732800 98524494250 100579606400 102465474020 112599422000 117103398880 121260916000 125724508000 126111352640 128081842525 146379248600 157639190800 163944758432 180159075200 182974060750 197048988500 204930948040 225198844000 234206797760 242521832000 251449016000 252222705280 256163685050 292758497200 315278381600 327889516864 365948121500 394097977000 409861896080 450397688000 468413595520 485043664000 502898032000 512327370100 585516994400 630556763200 640409212625 655779033728 731896243000 788195954000 819723792160 900795376000 1024654740200 1171033988800 1261113526400 1280818425250 1463792486000 1576391908000 1639447584320 2049309480400 2342067977600 2561636850500 2927584972000 3152783816000 3278895168640 4098618960800 5123273701000 5855169944000 6305567632000 8197237921600 10246547402000 11710339888000 16394475843200 20493094804000 40986189608000 81972379216000
• Sum of all divisors σ(n): 253770571641600
• Sum of proper divisors (its aliquot sum) s(n): 171798192425600
• 81972379216000 is an abundant number, because the sum of its proper divisors (171798192425600) is greater than itself. Its abundance is 89825813209600

Bases of 81972379216000

• Binary: 10010101000110110101110100010110110100010000000₂
• Hexadecimal: 0x4A8DAE8B6880
• Base-36: T21LA4CXS

Squares and roots of 81972379216000

• 81972379216000 squared (81972379216000²) is 6719470954331708774656000000
• 81972379216000 cubed (81972379216000³) is 550811021199376249529376321949696000000000
• The square root of 81972379216000 is 9053859.9070230813
• The cube root of 81972379216000 is 43439.9363430291

Scales and comparisons

• 81,972,379,216,000 seconds is equal to 2,606,468 years, 5 weeks, 2 days, 1 hour, 46 minutes, 40 seconds.
• To count from 1 to 81,972,379,216,000 would take you about six million, five hundred sixteen thousand, one hundred seventy 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 81972379216000 cubic inches would be around 3620 feet tall.

Recreational maths with 81972379216000

• 81972379216000 backwards is 00061297327918
• The number of decimal digits it has is: 14
• The sum of 81972379216000's digits is 55
• More coming soon!