81963882990

Names of 81963882990

• Cardinal: 81963882990 can be written as Eighty-one billion, nine hundred sixty-three million, eight hundred eighty-two thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 8.196388299 × 10¹⁰

Factors of 81963882990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 358

Divisors of 81963882990

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 81 90 99 110 135 162 165 198 243 270 297 330 337 405 486 495 594 674 729 810 891 990 1011 1215 1458 1485 1685 1782 2022 2187 2430 2673 2970 3033 3370 3645 3707 4374 4455 5055 5346 6066 6561 7290 7414 8019 8910 9099 10110 10935 11121 13122 13365 15165 16038 18198 18535 21870 22242 24057 26730 27297 30330 32805 33363 37070 40095 45495 48114 54594 55605 65610 66726 72171 80190 81891 90990 100089 111210 113569 120285 136485 144342 163782 166815 200178 227138 240570 245673 272970 300267 333630 340707 360855 409455 491346 500445 567845 600534 681414 721710 737019 818910 900801 1000890 1022121 1135690 1228365 1249259 1474038 1501335 1703535 1801602 2044242 2211057 2456730 2498518 2702403 3002670 3066363 3407070 3685095 3747777 4422114 4504005 5110605 5404806 6132726 6246295 7370190 7495554 8107209 9008010 9199089 10221210 11055285 11243331 12492590 13512015 15331815 16214418 18398178 18738885 22110570 22486662 24321627 27024030 27597267 30663630 33729993 37477770 40536045 45995445 48643254 55194534 56216655 67459986 81072090 82791801 91990890 101189979 112433310 121608135 137986335 165583602 168649965 202379958 243216270 248375403 275972670 303569937 337299930 413959005 496750806 505949895 607139874 745126209 827918010 910709811 1011899790 1241877015 1490252418 1517849685 1821419622 2483754030 2732129433 3035699370 3725631045 4553549055 5464258866 7451262090 8196388299 9107098110 13660647165 16392776598 27321294330 40981941495 81963882990
• Sum of all divisors σ(n): 242127097992
• Sum of proper divisors (its aliquot sum) s(n): 160163215002
• 81963882990 is an abundant number, because the sum of its proper divisors (160163215002) is greater than itself. Its abundance is 78199332012

Bases of 81963882990

• Binary: 1001100010101011011011001100111101110₂
• Hexadecimal: 0x13156D99EE
• Base-36: 11NJ6GVI

Squares and roots of 81963882990

• 81963882990 squared (81963882990²) is 6718078114798411340100
• 81963882990 cubed (81963882990³) is 550639768519016774517845494899000
• The square root of 81963882990 is 286293.3512850063
• The cube root of 81963882990 is 4343.8435478665

Scales and comparisons

• 81,963,882,990 seconds is equal to 2,606 years, 10 weeks, 2 days, 1 hour, 16 minutes, 30 seconds.
• To count from 1 to 81,963,882,990 would take you about five thousand, two hundred twelve 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 81963882990 cubic inches would be around 362 feet tall.

Recreational maths with 81963882990

• 81963882990 backwards is 09928836918
• The number of decimal digits it has is: 11
• The sum of 81963882990's digits is 63
• More coming soon!