81326972337817600

Names of 81326972337817600

• Cardinal: 81326972337817600 can be written as Eighty-one quadrillion, three hundred twenty-six trillion, nine hundred seventy-two billion, three hundred thirty-seven million, eight hundred seventeen thousand, six hundred.

Scientific notation

• Scientific notation: 8.13269723378176 × 10¹⁶

Factors of 81326972337817600

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 802322

Divisors of 81326972337817600

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 421 512 640 800 842 1024 1280 1600 1684 2048 2105 2560 3200 3368 4210 4733 5120 6400 6736 8420 9466 10240 10525 12800 13472 16840 18932 21050 23665 25600 26944 33680 37864 42100 47330 51200 53888 67360 75728 84200 94660 107776 118325 134720 151456 168400 189320 215552 236650 269440 302912 336800 378640 431104 473300 538880 605824 673600 757280 797161 862208 946600 1077760 1211648 1347200 1514560 1594322 1893200 1992593 2155520 2423296 2694400 3029120 3188644 3786400 3985186 3985805 4311040 4846592 5388800 6058240 6377288 7572800 7970372 7971610 9693184 9962965 10777600 12116480 12754576 15145600 15940744 15943220 19925930 19929025 21555200 24232960 25509152 30291200 31881488 31886440 39851860 39858050 48465920 49814825 51018304 60582400 63762976 63772880 79703720 79716100 99629650 102036608 121164800 127525952 127545760 159407440 159432200 199259300 204073216 242329600 255051904 255091520 318814880 318864400 335604781 398518600 408146432 510103808 510183040 637629760 637728800 671209562 797037200 816292864 1020207616 1020366080 1275259520 1275457600 1342419124 1594074400 1632585728 1678023905 2040415232 2040732160 2550519040 2550915200 2684838248 3188148800 3356047810 3772963013 4080830464 4081464320 5101038080 5101830400 5369676496 6376297600 6712095620 7545926026 8162928640 8390119525 10202076160 10203660800 10739352992 12752595200 13424191240 15091852052 16780239050 18864815065 20404152320 20407321600 21478705984 25505190400 26848382480 30183704104 33560478100 37729630130 40814643200 42957411968 51010380800 53696764960 60367408208 67120956200 75459260260 85914823936 94324075325 102020761600 107393529920 120734816416 134241912400 150918520520 171829647872 188648150650 214787059840 241469632832 268483824800 301837041040 343659295744 377296301300 429574119680 482939265664 536967649600 603674082080 687318591488 754592602600 859148239360 965878531328 1073935299200 1207348164160 1509185205200 1588417428473 1718296478720 1931757062656 2147870598400 2414696328320 3018370410400 3176834856946 3436592957440 3863514125312 4295741196800 4829392656640 6036740820800 6353669713892 7727028250624 7942087142365 8591482393600 9658785313280 12073481641600 12707339427784 15884174284730 17182964787200 19317570626560 24146963283200 25414678855568 31768348569460 38635141253120 39710435711825 48293926566400 50829357711136 63536697138920 79420871423650 96587853132800 101658715422272 127073394277840 158841742847300 193175706265600 203317430844544 254146788555680 317683485694600 406634861689088 508293577111360 635366971389200 813269723378176 1016587154222720 1270733942778400 1626539446756352 2033174308445440 2541467885556800 3253078893512704 4066348616890880 5082935771113600 8132697233781760 10165871542227200 16265394467563520 20331743084454400 40663486168908800 81326972337817600
• Sum of all divisors σ(n): 202163567395837320
• Sum of proper divisors (its aliquot sum) s(n): 120836595058019720
• 81326972337817600 is an abundant number, because the sum of its proper divisors (120836595058019720) is greater than itself. Its abundance is 39509622720202120

Bases of 81326972337817600

• Binary: 100100000111011100111001101010000110110101000100000000000₂
• Hexadecimal: 0x120EE7350DA8800
• Base-36: M8S07BDQI9S

Squares and roots of 81326972337817600

• 81326972337817600 squared (81326972337817600²) is 6614076429636149106735130869760000
• 81326972337817600 cubed (81326972337817600³) is 537902810833230494267525764140712912828235776000000
• The square root of 81326972337817600 is 285178842.7247322987
• The cube root of 81326972337817600 is 433256.2817058755

Scales and comparisons

• 81,326,972,337,817,600 seconds is equal to 2,585,946,159 years, 26 weeks, 1 hour, 46 minutes, 40 seconds.
• To count from 1 to 81,326,972,337,817,600 would take you about seven billion, seven hundred fifty-seven million, eight hundred thirty-eight thousand, four hundred seventy-eight 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 81326972337817600 cubic inches would be around 36104.7 feet tall.

Recreational maths with 81326972337817600

• 81326972337817600 backwards is 00671873327962318
• The number of decimal digits it has is: 17
• The sum of 81326972337817600's digits is 73
• More coming soon!