81117343040

Names of 81117343040

• Cardinal: 81117343040 can be written as Eighty-one billion, one hundred seventeen million, three hundred forty-three thousand and forty.

Scientific notation

• Scientific notation: 8.111734304 × 10¹⁰

Factors of 81117343040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 4238

Divisors of 81117343040

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 5 8 10 16 20 29 32 40 58 64 73 80 116 145 146 160 232 290 292 320 365 464 580 584 730 841 928 1160 1168 1460 1682 1856 2117 2320 2336 2920 3364 4129 4205 4234 4640 4672 5840 6728 8258 8410 8468 9280 10585 11680 13456 16516 16820 16936 20645 21170 23360 26912 33032 33640 33872 41290 42340 53824 61393 66064 67280 67744 82580 84680 119741 122786 132128 134560 135488 165160 169360 239482 245572 264256 269120 301417 306965 330320 338720 478964 491144 598705 602834 613930 660640 677440 957928 982288 1197410 1205668 1227860 1321280 1507085 1915856 1964576 2394820 2411336 2455720 3014170 3472489 3831712 3929152 4789640 4822672 4911440 6028340 6944978 7663424 8741093 9579280 9645344 9822880 12056680 13889956 17362445 17482186 19158560 19290688 19645760 24113360 27779912 34724890 34964372 38317120 43705465 48226720 55559824 69449780 69928744 87410930 96453440 111119648 138899560 139857488 174821860 222239296 253491697 277799120 279714976 349643720 506983394 555598240 559429952 699287440 1013966788 1111196480 1267458485 1398574880 2027933576 2534916970 2797149760 4055867152 5069833940 8111734304 10139667880 16223468608 20279335760 40558671520 81117343040
• Sum of all divisors σ(n): 202840605240
• Sum of proper divisors (its aliquot sum) s(n): 121723262200
• 81117343040 is an abundant number, because the sum of its proper divisors (121723262200) is greater than itself. Its abundance is 40605919160

Bases of 81117343040

• Binary: 1001011100010111110000110110101000000₂
• Hexadecimal: 0x12E2F86D40
• Base-36: 119J66GW

Squares and roots of 81117343040

• 81117343040 squared (81117343040²) is 6580023341869036441600
• 81117343040 cubed (81117343040³) is 533754010633597823787528126464000
• The square root of 81117343040 is 284811.0655153695
• The cube root of 81117343040 is 4328.8370601923

Scales and comparisons

• 81,117,343,040 seconds is equal to 2,579 years, 14 weeks, 4 days, 3 hours, 17 minutes, 20 seconds.
• To count from 1 to 81,117,343,040 would take you about five thousand, one hundred fifty-eight 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 81117343040 cubic inches would be around 360.7 feet tall.

Recreational maths with 81117343040

• 81117343040 backwards is 04034371118
• 81117343040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81117343040's digits is 32
• More coming soon!