81821308973712

Names of 81821308973712

• Cardinal: 81821308973712 can be written as Eighty-one trillion, eight hundred twenty-one billion, three hundred eight million, nine hundred seventy-three thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 8.1821308973712 × 10¹³

Factors of 81821308973712

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 43206

Divisors of 81821308973712

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 33 42 44 48 56 66 77 84 88 109 112 121 132 154 168 176 218 231 242 264 308 327 336 363 433 436 462 484 528 616 654 726 763 847 866 872 924 968 1199 1232 1299 1308 1452 1526 1694 1732 1744 1848 1936 2289 2398 2541 2598 2616 2904 3031 3052 3388 3464 3597 3696 4578 4763 4796 5082 5196 5232 5808 6062 6104 6776 6928 7194 8393 9093 9156 9526 9592 10164 10392 12124 12208 13189 13552 14289 14388 16786 18186 18312 19052 19184 20328 20784 24248 25179 26378 28578 28776 33341 33572 36372 36624 38104 39567 40656 42641 47197 48496 50358 52393 52756 57156 57552 66682 67144 72744 76208 79134 85282 92323 94394 100023 100716 104786 105512 114312 127923 133364 134288 141591 145488 157179 158268 170564 184646 188788 200046 201432 209572 211024 228624 255846 266728 276969 283182 298487 314358 316536 330379 341128 366751 369292 377576 400092 402864 419144 469051 511692 519167 533456 553938 566364 596974 628716 633072 660758 682256 733502 738584 755152 800184 838288 895461 938102 991137 1023384 1038334 1100253 1107876 1132728 1193948 1257432 1321516 1407153 1467004 1477168 1557501 1600368 1790922 1876204 1982274 2046768 2076668 2200506 2215752 2265456 2387896 2514864 2643032 2814306 2934008 3115002 3283357 3581844 3634169 3752408 3964548 4153336 4401012 4431504 4647869 4775792 5159561 5286064 5628612 5710837 5868016 6230004 6566714 7163688 7268338 7504816 7929096 8306672 8802024 9295738 9850071 10319122 10902507 11257224 11421674 12460008 13133428 13943607 14327376 14536676 15478683 15858192 17132511 17604048 18463553 18591476 19700142 20638244 21805014 22514448 22843348 24920016 26266856 27887214 29073352 30957366 32535083 34265022 36116927 36927106 37182952 39400284 39975859 41276488 43610028 45686696 51126559 52533712 55390659 55774428 58146704 61914732 65070166 68530044 72233854 73854212 74365904 78800568 79951718 82552976 87220056 91373392 97605249 102253118 108350781 110781318 111548856 119927577 123829464 129244871 130140332 137060088 144467708 147708424 153379677 157601136 159903436 174440112 195210498 203099083 204506236 216701562 221562636 223097712 239855154 247658928 258489742 260280664 274120176 288935416 295416848 306759354 319806872 357885913 387734613 390420996 406198166 409012472 433403124 443125272 479710308 516979484 520561328 562392149 577870832 609297249 613518708 639613744 715771826 775469226 780841992 812396332 818024944 866806248 886250544 959420616 1033958968 1073657739 1124784298 1218594498 1227037416 1421693581 1431543652 1550938452 1561683984 1624792664 1687176447 1733612496 1918841232 2012527277 2067917936 2147315478 2234089913 2249568596 2437188996 2454074832 2843387162 2863087304 3101876904 3249585328 3374352894 3936745043 4025054554 4265080743 4294630956 4468179826 4499137192 4874377992 5686774324 5726174608 6037581831 6203753808 6702269739 6748705788 7873490086 8050109108 8530161486 8589261912 8936359652 8998274384 9748755984 11373548648 11810235129 12075163662 13404539478 13497411576 14087690939 15638629391 15746980172 16100218216 17060322972 17178523824 17872719304 22137800047 22747097296 23620470258 24150327324 26809078956 26994823152 28175381878 31277258782 31493960344 32200436432 34120645944 35745438608 42263072817 44275600094 46915888173 47240940516 48300654648 53618157912 56350763756 62554517564 62987920688 66413400141 68241291888 84526145634 88551200188 93831776346 94481881032 96601309296 107236315824 112701527512 125109035128 132826800282 154964600329 169052291268 177102400376 187663552692 188963762064 225403055024 243515800517 250218070256 265653600564 309929200658 338104582536 354204800752 375327105384 464893800987 487031601034 531307201128 619858401316 676209165072 730547401551 750654210768 929787601974 974063202068 1062614402256 1239716802632 1461094803102 1704610603619 1859575203948 1948126404136 2479433605264 2922189606204 3409221207238 3719150407896 3896252808272 5113831810857 5844379212408 6818442414476 7438300815792 10227663621714 11688758424816 13636884828952 20455327243428 27273769657904 40910654486856 81821308973712
• Sum of all divisors σ(n): 268585951898880
• Sum of proper divisors (its aliquot sum) s(n): 186764642925168
• 81821308973712 is an abundant number, because the sum of its proper divisors (186764642925168) is greater than itself. Its abundance is 104943333951456

Bases of 81821308973712

• Binary: 10010100110101010000010000011100111001010010000₂
• Hexadecimal: 0x4A6A820E7290
• Base-36: T046USRYO

Squares and roots of 81821308973712

• 81821308973712 squared (81821308973712²) is 6694726602171643858707058944
• 81821308973712 cubed (81821308973712³) is 547771293810815170283334436580546530480128
• The square root of 81821308973712 is 9045513.1957071401
• The cube root of 81821308973712 is 43413.2341891021

Scales and comparisons

• 81,821,308,973,712 seconds is equal to 2,601,664 years, 27 weeks, 5 days, 21 hours, 35 minutes, 12 seconds.
• To count from 1 to 81,821,308,973,712 would take you about six million, five hundred four thousand, one hundred sixty-one 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 81821308973712 cubic inches would be around 3617.8 feet tall.

Recreational maths with 81821308973712

• 81821308973712 backwards is 21737980312818
• The number of decimal digits it has is: 14
• The sum of 81821308973712's digits is 60
• More coming soon!