81350901520

Names of 81350901520

• Cardinal: 81350901520 can be written as Eighty-one billion, three hundred fifty million, nine hundred one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.135090152 × 10¹⁰

Factors of 81350901520

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 44330

Divisors of 81350901520

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 67 70 80 98 112 134 140 196 245 268 280 335 343 392 469 490 536 560 670 686 784 938 980 1072 1340 1372 1715 1876 1960 2345 2680 2744 3283 3430 3752 3920 4690 5360 5488 6566 6860 7504 9380 13132 13720 16415 18760 22981 26264 27440 32830 37520 44249 45962 52528 65660 88498 91924 114905 131320 176996 183848 221245 229810 262640 309743 353992 367696 442490 459620 619486 707984 884980 919240 1238972 1548715 1769960 1838480 2168201 2477944 2964683 3097430 3539920 4336402 4955888 5929366 6194860 8672804 10841005 11858732 12389720 14823415 15177407 17345608 20752781 21682010 23717464 24779440 29646830 30354814 34691216 41505562 43364020 47434928 59293660 60709628 75887035 83011124 86728040 103763905 118587320 121419256 145269467 151774070 166022248 173456080 207527810 237174640 242838512 290538934 303548140 332044496 415055620 581077868 607096280 726347335 830111240 1016886269 1162155736 1214192560 1452694670 1660222480 2033772538 2324311472 2905389340 4067545076 5084431345 5810778680 8135090152 10168862690 11621557360 16270180304 20337725380 40675450760 81350901520
• Sum of all divisors σ(n): 223869600000
• Sum of proper divisors (its aliquot sum) s(n): 142518698480
• 81350901520 is an abundant number, because the sum of its proper divisors (142518698480) is greater than itself. Its abundance is 61167796960

Bases of 81350901520

• Binary: 1001011110000111001000011111100010000₂
• Hexadecimal: 0x12F0E43F10
• Base-36: 11DE85CG

Squares and roots of 81350901520

• 81350901520 squared (81350901520²) is 6617969178116738310400
• 81350901520 cubed (81350901520³) is 538377758871370117352961591808000
• The square root of 81350901520 is 285220.7943330921
• The cube root of 81350901520 is 4332.9877048725

Scales and comparisons

• 81,350,901,520 seconds is equal to 2,586 years, 36 weeks, 5 days, 8 hours, 38 minutes, 40 seconds.
• To count from 1 to 81,350,901,520 would take you about five thousand, one hundred seventy-three 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 81350901520 cubic inches would be around 361.1 feet tall.

Recreational maths with 81350901520

• 81350901520 backwards is 02510905318
• The number of decimal digits it has is: 11
• The sum of 81350901520's digits is 34
• More coming soon!