81320223744

Names of 81320223744

• Cardinal: 81320223744 can be written as Eighty-one billion, three hundred twenty million, two hundred twenty-three thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 8.1320223744 × 10¹⁰

Factors of 81320223744

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 337

Divisors of 81320223744

• Number of divisors d(n): 528
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 31 32 36 38 48 57 62 64 71 72 76 93 96 114 124 128 142 144 152 171 186 192 211 213 228 248 256 279 284 288 304 342 372 384 422 426 456 496 512 558 568 576 589 608 633 639 684 744 768 844 852 912 992 1024 1116 1136 1152 1178 1216 1266 1278 1349 1368 1488 1536 1688 1704 1767 1824 1899 1984 2201 2232 2272 2304 2356 2432 2532 2556 2698 2736 2976 3072 3376 3408 3534 3648 3798 3968 4009 4047 4402 4464 4544 4608 4712 4864 5064 5112 5301 5396 5472 5952 6541 6603 6752 6816 7068 7296 7596 7936 8018 8094 8804 8928 9088 9216 9424 9728 10128 10224 10602 10792 10944 11904 12027 12141 13082 13206 13504 13632 14136 14592 14981 15192 15872 16036 16188 17608 17856 18176 18848 19456 19623 19809 20256 20448 21204 21584 21888 23808 24054 24282 26164 26412 27008 27264 28272 29184 29962 30384 31744 32072 32376 35216 35712 36081 36352 37696 39246 39618 40512 40896 41819 42408 43168 43776 44943 47616 48108 48564 52328 52824 54016 54528 56544 58368 58869 59924 60768 64144 64752 70432 71424 72162 72704 75392 78492 79236 81024 81792 83638 84816 86336 87552 89886 95232 96216 97128 104656 105648 108032 109056 113088 117738 119848 121536 124279 125457 128288 129504 134829 140864 142848 144324 150784 156984 158472 162048 163584 167276 169632 172672 175104 179772 192432 194256 209312 211296 216064 218112 226176 235476 239696 243072 248558 250914 256576 259008 269658 281728 284639 285696 288648 301568 313968 316944 324096 327168 334552 339264 345344 359544 372837 376371 384864 388512 418624 422592 452352 464411 470952 479392 486144 497116 501828 513152 518016 539316 563456 569278 577296 603136 627936 633888 648192 654336 669104 678528 690688 719088 745674 752742 769728 777024 837248 845184 853917 904704 928822 941904 958784 972288 994232 1003656 1026304 1036032 1078632 1118511 1126912 1138556 1154592 1255872 1267776 1338208 1357056 1381376 1393233 1438176 1491348 1505484 1539456 1554048 1674496 1690368 1707834 1809408 1857644 1883808 1917568 1944576 1988464 2007312 2052608 2072064 2157264 2237022 2253824 2277112 2309184 2511744 2535552 2561751 2676416 2714112 2786466 2876352 2982696 3010968 3078912 3108096 3348992 3380736 3415668 3715288 3767616 3835136 3976928 4014624 4105216 4144128 4179699 4314528 4474044 4554224 4618368 5023488 5071104 5123502 5352832 5428224 5572932 5752704 5965392 6021936 6157824 6216192 6697984 6761472 6831336 7430576 7535232 7670272 7953856 8029248 8359398 8629056 8823809 8948088 9108448 9236736 10046976 10142208 10247004 10705664 11145864 11505408 11930784 12043872 12315648 12432384 13662672 14861152 15070464 15340544 15907712 16058496 16718796 17258112 17647618 17896176 18216896 18473472 20093952 20284416 20494008 21411328 22291728 23010816 23861568 24087744 26471427 27325344 29722304 30140928 31815424 32116992 33437592 34516224 35295236 35792352 36433792 36946944 40988016 42822656 44583456 46021632 47723136 48175488 52942854 54650688 59444608 60281856 63630848 64233984 66875184 69032448 70590472 71584704 72867584 79414281 81976032 89166912 95446272 96350976 105885708 109301376 118889216 127261696 128467968 133750368 138064896 141180944 143169408 145735168 158828562 163952064 178333824 190892544 192701952 211771416 218602752 237778432 267500736 282361888 286338816 291470336 317657124 327904128 356667648 381785088 385403904 423542832 437205504 475556864 535001472 564723776 572677632 635314248 655808256 713335296 847085664 874411008 1070002944 1129447552 1145355264 1270628496 1311616512 1426670592 1694171328 2140005888 2258895104 2541256992 2623233024 3388342656 4280011776 4517790208 5082513984 6776685312 9035580416 10165027968 13553370624 20330055936 27106741248 40660111872 81320223744
• Sum of all divisors σ(n): 259961794560
• Sum of proper divisors (its aliquot sum) s(n): 178641570816
• 81320223744 is an abundant number, because the sum of its proper divisors (178641570816) is greater than itself. Its abundance is 97321347072

Bases of 81320223744

• Binary: 1001011101111000100000010010000000000₂
• Hexadecimal: 0x12EF102400
• Base-36: 11CVYM80

Squares and roots of 81320223744

• 81320223744 squared (81320223744²) is 6612978789774221377536
• 81320223744 cubed (81320223744³) is 537768914798766021664615415414784
• The square root of 81320223744 is 285167.0102659141
• The cube root of 81320223744 is 4332.4429736063

Scales and comparisons

• 81,320,223,744 seconds is equal to 2,585 years, 38 weeks, 7 hours, 2 minutes, 24 seconds.
• To count from 1 to 81,320,223,744 would take you about five thousand, one hundred seventy-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 81320223744 cubic inches would be around 361 feet tall.

Recreational maths with 81320223744

• 81320223744 backwards is 44732202318
• 81320223744 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81320223744's digits is 36
• More coming soon!