81964090708745830464

Names of 81964090708745830464

• Cardinal: 81964090708745830464 can be written as Eighty-one quintillion, nine hundred sixty-four quadrillion, ninety trillion, seven hundred eight billion, seven hundred forty-five million, eight hundred thirty thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 8.1964090708745830464 × 10¹⁹

Factors of 81964090708745830464

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1532503319

Divisors of 81964090708745830464

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 19 22 24 32 33 38 44 48 57 64 66 76 88 96 114 132 152 176 192 209 228 264 304 352 418 456 528 608 627 704 836 912 1056 1216 1254 1672 1824 2112 2508 3344 3648 5016 6688 10032 13376 20064 40128 1333991 2667982 4001973 5335964 8003946 10671928 14673901 16007892 21343856 25345829 29347802 32015784 42687712 44021703 50691658 58695604 64031568 76037487 85375424 88043406 101383316 117391208 128063136 152074974 176086812 202766632 234782416 256126272 278804119 304149948 352173624 405533264 469564832 557608238 608299896 704347248 811066528 836412357 939129664 1115216476 1216599792 1408694496 1531169293 1622133056 1672824714 2230432952 2433199584 2817388992 3062338586 3345649428 4460865904 4593507879 4866399168 6124677172 6691298856 8921731808 9187015758 12249354344 13382597712 16842862223 17843463616 18374031516 24498708688 26765195424 29092216567 33685724446 36748063032 48997417376 50528586669 53530390848 58184433134 67371448892 73496126064 87276649701 97994834752 101057173338 116368866268 134742897784 146992252128 174553299402 202114346676 232737732536 269485795568 293984504256 320014382237 349106598804 404228693352 465475465072 538971591136 640028764474 698213197608 808457386704 930950930144 960043146711 1077943182272 1280057528948 1396426395216 1616914773408 1861901860288 1920086293422 2560115057896 2792852790432 3233829546816 3840172586844 5120230115792 5585705580864 7680345173688 10240460231584 15360690347376 20480920463168 30721380694752 61442761389504 2042566056338363 4085132112676726 6127698169015089 8170264225353452 12255396338030178 16340528450706904 22468226619721993 24510792676060356 32681056901413808 38808755070428897 44936453239443986 49021585352120712 65362113802827616 67404679859165979 77617510140857794 89872906478887972 98043170704241424 116426265211286691 130724227605655232 134809359718331958 155235020281715588 179745812957775944 196086341408482848 232852530422573382 269618719436663916 310470040563431176 359491625915551888 392172682816965696 426896305774717867 465705060845146764 539237438873327832 620940081126862352 718983251831103776 853792611549435734 931410121690293528 1078474877746655664 1241880162253724704 1280688917324153601 1437966503662207552 1707585223098871468 1862820243380587056 2156949755493311328 2483760324507449408 2561377834648307202 3415170446197742936 3725640486761174112 4313899510986622656 5122755669296614404 6830340892395485872 7451280973522348224 10245511338593228808 13660681784790971744 20491022677186457616 27321363569581943488 40982045354372915232 81964090708745830464
• Sum of all divisors σ(n): 249029840431573724160
• Sum of proper divisors (its aliquot sum) s(n): 167065749722827893696
• 81964090708745830464 is an abundant number, because the sum of its proper divisors (167065749722827893696) is greater than itself. Its abundance is 85101659014082063232

Bases of 81964090708745830464

• Binary: 1000111000101111010111100100011110000111000101100001100000001000000₂
• Hexadecimal: 0x4717AF23C38B0C040
• Base-36: HAQ399B5I4MDC

Squares and roots of 81964090708745830464

• 81964090708745830464 squared (81964090708745830464²) is 6718112165711514572872727720105030455296
• 81964090708745830464 cubed (81964090708745830464³) is 550643954941907480524760794794103179853415479982775546937344
• The square root of 81964090708745830464 is 9053402162.1015947479
• The cube root of 81964090708745830464 is 4343847.2173565513

Scales and comparisons

• 81,964,090,708,745,830,464 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 81,964,090,708,745,830,464 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 81964090708745830464 cubic inches would be around 361987.3 feet tall.

Recreational maths with 81964090708745830464

• 81964090708745830464 backwards is 46403854780709046918
• The number of decimal digits it has is: 20
• The sum of 81964090708745830464's digits is 93
• More coming soon!