81363634040

Names of 81363634040

• Cardinal: 81363634040 can be written as Eighty-one billion, three hundred sixty-three million, six hundred thirty-four thousand and forty.

Scientific notation

• Scientific notation: 8.136363404 × 10¹⁰

Factors of 81363634040

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 670

Divisors of 81363634040

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 13 17 20 26 34 40 52 65 68 85 104 130 136 170 181 211 221 241 260 340 362 422 442 482 520 680 724 844 884 905 964 1055 1105 1205 1448 1688 1768 1810 1928 2110 2210 2353 2410 2743 3077 3133 3587 3620 4097 4220 4420 4706 4820 5486 6154 6266 7174 7240 8194 8440 8840 9412 9640 10972 11765 12308 12532 13715 14348 15385 15665 16388 17935 18824 20485 21944 23530 24616 25064 27430 28696 30770 31330 32776 35870 38191 40001 40970 43621 46631 47060 50851 53261 54860 61540 62660 71740 76382 80002 81940 87242 93262 94120 101702 106522 109720 123080 125320 143480 152764 160004 163880 174484 186524 190955 200005 203404 213044 218105 233155 254255 266305 305528 320008 348968 373048 381910 400010 406808 426088 436210 466310 496483 508510 532610 567073 649247 661063 741557 763820 800020 864467 872420 932620 992966 1017020 1065220 1134146 1298494 1322126 1483114 1527640 1600040 1728934 1744840 1865240 1985932 2034040 2130440 2268292 2482415 2596988 2644252 2835365 2966228 3246235 3305315 3457868 3707785 3971864 4322335 4536584 4964830 5193976 5288504 5670730 5932456 6492470 6610630 6915736 7415570 8440211 8644670 9204031 9640241 9929660 11238071 11341460 12984940 13221260 14831140 16880422 17289340 18408062 19280482 19859320 22476142 22682920 25969880 26442520 29662280 33760844 34578680 36816124 38560964 42201055 44952284 46020155 48201205 56190355 67521688 73632248 77121928 84402110 89904568 92040310 96402410 112380710 119652403 156468527 168804220 184080620 192804820 224761420 239304806 312937054 337608440 368161240 385609640 449522840 478609612 598262015 625874108 782342635 957219224 1196524030 1251748216 1564685270 2034090851 2393048060 3129370540 4068181702 4786096120 6258741080 8136363404 10170454255 16272726808 20340908510 40681817020 81363634040
• Sum of all divisors σ(n): 211770599040
• Sum of proper divisors (its aliquot sum) s(n): 130406965000
• 81363634040 is an abundant number, because the sum of its proper divisors (130406965000) is greater than itself. Its abundance is 49043330960

Bases of 81363634040

• Binary: 1001011110001101001101000011101111000₂
• Hexadecimal: 0x12F1A68778
• Base-36: 11DLT1TK

Squares and roots of 81363634040

• 81363634040 squared (81363634040²) is 6620040944195046721600
• 81363634040 cubed (81363634040³) is 538630588713301843836964163264000
• The square root of 81363634040 is 285243.1139221421
• The cube root of 81363634040 is 4333.2137502041

Scales and comparisons

• 81,363,634,040 seconds is equal to 2,587 years, 5 weeks, 5 days, 17 hours, 27 minutes, 20 seconds.
• To count from 1 to 81,363,634,040 would take you about five thousand, one hundred seventy-four 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 81363634040 cubic inches would be around 361.1 feet tall.

Recreational maths with 81363634040

• 81363634040 backwards is 04043636318
• The number of decimal digits it has is: 11
• The sum of 81363634040's digits is 38
• More coming soon!