81377713830

Names of 81377713830

• Cardinal: 81377713830 can be written as Eighty-one billion, three hundred seventy-seven million, seven hundred thirteen thousand, eight hundred thirty.

Scientific notation

• Scientific notation: 8.137771383 × 10¹⁰

Factors of 81377713830

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1189

Divisors of 81377713830

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 19 21 30 35 38 42 49 57 70 95 98 105 114 133 147 190 210 245 266 285 294 343 361 399 490 570 665 686 722 735 798 931 1029 1083 1153 1330 1470 1715 1805 1862 1995 2058 2166 2306 2527 2793 3430 3459 3610 3990 4655 5054 5145 5415 5586 5765 6517 6859 6918 7581 8071 9310 10290 10830 11530 12635 13034 13718 13965 15162 16142 17295 17689 19551 20577 21907 24213 25270 27930 32585 34295 34590 35378 37905 39102 40355 41154 43814 48013 48426 53067 56497 65170 65721 68590 75810 80710 88445 96026 97755 102885 106134 109535 112994 121065 123823 131442 144039 153349 169491 176890 195510 205770 219070 240065 242130 247646 265335 282485 288078 306698 328605 336091 338982 371469 395479 416233 460047 480130 530670 564970 619115 657210 672182 720195 742938 766745 790958 832466 847455 920094 1008273 1073443 1186437 1238230 1248699 1440390 1533490 1680455 1694910 1857345 1977395 2016546 2081165 2146886 2300235 2352637 2372874 2497398 2913631 3220329 3360910 3714690 3954790 4162330 4600470 4705274 5041365 5367215 5827262 5932185 6243495 6440658 7057911 7514101 7908427 8740893 10082730 10734430 11763185 11864370 12486990 14115822 14568155 15028202 15816854 16101645 17481786 20395417 22542303 23526370 23725281 29136310 32203290 35289555 37570505 39542135 40790834 43704465 45084606 47450562 55358989 61186251 70579110 75141010 79084270 87408930 101977085 110717978 112711515 118626405 122372502 142767919 166076967 203954170 225423030 237252810 276794945 285535838 305931255 332153934 387512923 428303757 553589890 611862510 713839595 775025846 830384835 856607514 1162538769 1427679190 1660769670 1937564615 2141518785 2325077538 2712590461 3875129230 4283037570 5425180922 5812693845 8137771383 11625387690 13562952305 16275542766 27125904610 40688856915 81377713830
• Sum of all divisors σ(n): 240622848000
• Sum of proper divisors (its aliquot sum) s(n): 159245134170
• 81377713830 is an abundant number, because the sum of its proper divisors (159245134170) is greater than itself. Its abundance is 77867420340

Bases of 81377713830

• Binary: 1001011110010011111010101111010100110₂
• Hexadecimal: 0x12F27D5EA6
• Base-36: 11DU6TUU

Squares and roots of 81377713830

• 81377713830 squared (81377713830²) is 6622332308197373268900
• 81377713830 cubed (81377713830³) is 538910263463649205034235838887000
• The square root of 81377713830 is 285267.7931873839
• The cube root of 81377713830 is 4333.4636866835

Scales and comparisons

• 81,377,713,830 seconds is equal to 2,587 years, 29 weeks, 16 hours, 30 minutes, 30 seconds.
• To count from 1 to 81,377,713,830 would take you about five thousand, one hundred seventy-five 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 81377713830 cubic inches would be around 361.1 feet tall.

Recreational maths with 81377713830

• 81377713830 backwards is 03831777318
• The number of decimal digits it has is: 11
• The sum of 81377713830's digits is 48
• More coming soon!