81443831392

Names of 81443831392

• Cardinal: 81443831392 can be written as Eighty-one billion, four hundred forty-three million, eight hundred thirty-one thousand, three hundred ninety-two.

Scientific notation

• Scientific notation: 8.1443831392 × 10¹⁰

Factors of 81443831392

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 114

Divisors of 81443831392

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 41 44 49 53 56 77 82 88 98 106 112 154 164 176 196 212 224 287 308 328 352 371 392 424 451 539 574 583 616 656 742 784 848 902 1078 1148 1166 1232 1312 1484 1568 1681 1696 1804 2009 2156 2173 2296 2332 2464 2597 2809 2968 3157 3362 3608 4018 4081 4312 4346 4592 4664 5194 5618 5936 6314 6724 7216 8036 8162 8624 8692 9184 9328 10388 11236 11767 11872 12628 13448 14432 15211 16072 16324 17248 17384 18491 18656 19663 20776 22099 22472 23534 23903 25256 26896 28567 30422 30899 32144 32648 34768 36982 39326 41552 44198 44944 47068 47806 50512 53792 57134 60844 61798 64288 65296 69536 73964 78652 82369 83104 88396 89093 89888 94136 95612 101024 106477 114268 115169 121688 123596 129437 130592 137641 147928 157304 164738 167321 176792 178186 188272 191224 212954 216293 228536 230338 243376 247192 258874 275282 295856 314608 329476 334642 353584 356372 376544 382448 425908 432586 457072 460676 486752 494384 517748 550564 591712 623651 629216 658952 669284 707168 712744 764896 806183 851816 865172 906059 914144 921352 980023 988768 1035496 1101128 1171247 1247302 1266859 1317904 1338568 1425488 1514051 1612366 1703632 1730344 1812118 1842704 1960046 2070992 2202256 2342494 2494604 2533718 2635808 2677136 2850976 3028102 3224732 3407264 3460688 3624236 3685408 3920092 4141984 4365557 4404512 4684988 4721929 4989208 5067436 5354272 5643281 6056204 6449464 6860161 6921376 7248472 7840184 8731114 8868013 9369976 9443858 9978416 10134872 11286562 12112408 12898928 13720322 14496944 15680368 17462228 17736026 18739952 18887716 19956832 20269744 22573124 24224816 25797856 27440644 28993888 31360736 33053503 34924456 35472052 37479904 37775432 40539488 45146248 48021127 48449632 51941219 54881288 62076091 66107006 69848912 70944104 75550864 90292496 96042254 103882438 109762576 124152182 132214012 139697824 141888208 151101728 180584992 192084508 207764876 219525152 231374521 248304364 264428024 283776416 363588533 384169016 415529752 462749042 496608728 528856048 727177066 768338032 831059504 925498084 993217456 1057712096 1454354132 1536676064 1662119008 1850996168 1986434912 2545119731 2908708264 3701992336 5090239462 5817416528 7403984672 10180478924 11634833056 20360957848 40721915696 81443831392
• Sum of all divisors σ(n): 212570638308
• Sum of proper divisors (its aliquot sum) s(n): 131126806916
• 81443831392 is an abundant number, because the sum of its proper divisors (131126806916) is greater than itself. Its abundance is 49682975524

Bases of 81443831392

• Binary: 1001011110110011011100011111001100000₂
• Hexadecimal: 0x12F66E3E60
• Base-36: 11EXJYHS

Squares and roots of 81443831392

• 81443831392 squared (81443831392²) is 6633097671808524657664
• 81443831392 cubed (81443831392³) is 540224888389441233927061336588288
• The square root of 81443831392 is 285383.6564906967
• The cube root of 81443831392 is 4334.6369829053

Scales and comparisons

• 81,443,831,392 seconds is equal to 2,589 years, 34 weeks, 2 days, 22 hours, 29 minutes, 52 seconds.
• To count from 1 to 81,443,831,392 would take you about five thousand, one hundred seventy-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 81443831392 cubic inches would be around 361.2 feet tall.

Recreational maths with 81443831392

• 81443831392 backwards is 29313834418
• The number of decimal digits it has is: 11
• The sum of 81443831392's digits is 46
• More coming soon!