81365797340

Names of 81365797340

• Cardinal: 81365797340 can be written as Eighty-one billion, three hundred sixty-five million, seven hundred ninety-seven thousand, three hundred forty.

Scientific notation

• Scientific notation: 8.136579734 × 10¹⁰

Factors of 81365797340

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2057

Divisors of 81365797340

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 10 20 31 62 124 151 155 302 310 604 620 755 877 991 1510 1754 1982 3020 3508 3964 4385 4681 4955 8770 9362 9910 17540 18724 19820 23405 27187 30721 46810 54374 61442 93620 108748 122884 132427 135935 149641 153605 264854 271870 299282 307210 529708 543740 598564 614420 662135 748205 869107 1324270 1496410 1738214 2648540 2992820 3476428 4105237 4345535 4638871 8210474 8691070 9277742 16420948 17382140 18555484 20526185 23194355 26942317 41052370 46388710 53884634 82104740 92777420 107769268 131235157 134711585 262470314 269423170 524940628 538846340 656175785 1312351570 2624703140 4068289867 8136579734 16273159468 20341449335 40682898670 81365797340
• Sum of all divisors σ(n): 177929945088
• Sum of proper divisors (its aliquot sum) s(n): 96564147748
• 81365797340 is an abundant number, because the sum of its proper divisors (96564147748) is greater than itself. Its abundance is 15198350408

Bases of 81365797340

• Binary: 1001011110001110001111000100111011100₂
• Hexadecimal: 0x12F1C789DC
• Base-36: 11DN3F18

Squares and roots of 81365797340

• 81365797340 squared (81365797340²) is 6620392976773951075600
• 81365797340 cubed (81365797340³) is 538673553259348630208344618904000
• The square root of 81365797340 is 285246.9059253755
• The cube root of 81365797340 is 4333.2521537587

Scales and comparisons

• 81,365,797,340 seconds is equal to 2,587 years, 9 weeks, 2 days, 18 hours, 22 minutes, 20 seconds.
• To count from 1 to 81,365,797,340 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 81365797340 cubic inches would be around 361.1 feet tall.

Recreational maths with 81365797340

• 81365797340 backwards is 04379756318
• The number of decimal digits it has is: 11
• The sum of 81365797340's digits is 53
• More coming soon!