81723905016

Names of 81723905016

• Cardinal: 81723905016 can be written as Eighty-one billion, seven hundred twenty-three million, nine hundred five thousand and sixteen.

Scientific notation

• Scientific notation: 8.1723905016 × 10¹⁰

Factors of 81723905016

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1070

Divisors of 81723905016

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 6 8 12 13 24 26 39 41 52 53 78 82 104 106 123 149 156 159 164 212 246 298 312 318 328 424 447 492 533 596 636 689 809 894 984 1066 1192 1272 1378 1599 1618 1788 1937 2067 2132 2173 2427 2756 3198 3236 3576 3874 4134 4264 4346 4854 5512 5811 6109 6396 6472 6519 7748 7897 8268 8692 9708 10517 11622 12218 12792 13038 15496 15794 16536 17384 18327 19416 21034 23244 23691 24436 26076 28249 31551 31588 33169 36654 42068 42877 46488 47382 48872 52152 56498 63102 63176 66338 73308 79417 84136 84747 85754 94764 99507 102661 112996 120541 126204 128631 132676 146616 158834 169494 171508 189528 199014 205322 225992 238251 241082 252408 257262 265352 307983 317668 323777 338988 343016 361623 398028 410644 431197 476502 482164 514524 557401 615966 635336 647554 677976 723246 796056 821288 862394 953004 964328 971331 1029048 1114802 1231932 1293591 1295108 1446492 1567033 1672203 1724788 1757957 1906008 1942662 2229604 2463864 2587182 2590216 2892984 3134066 3344406 3449576 3515914 3885324 4209101 4459208 4701099 4942181 5174364 5273871 6268132 6388673 6688812 7031828 7770648 8418202 9402198 9884362 10348728 10547742 12536264 12627303 12777346 13377624 14063656 14826543 16836404 18804396 19166019 19768724 21095484 22853441 25254606 25554692 29653086 33672808 37608792 38332038 39537448 42190968 45706882 50509212 51109384 59306172 64248353 68560323 76664076 83052749 91413764 101018424 118612344 128496706 137120646 153328152 166105498 182827528 192745059 249158247 256993412 261935593 274241292 332210996 385490118 498316494 513986824 523871186 548482584 664421992 770980236 785806779 996632988 1047742372 1541960472 1571613558 1993265976 2095484744 3143227116 3405162709 6286454232 6810325418 10215488127 13620650836 20430976254 27241301672 40861952508 81723905016
• Sum of all divisors σ(n): 231472080000
• Sum of proper divisors (its aliquot sum) s(n): 149748174984
• 81723905016 is an abundant number, because the sum of its proper divisors (149748174984) is greater than itself. Its abundance is 68024269968

Bases of 81723905016

• Binary: 1001100000111000111111101001111111000₂
• Hexadecimal: 0x13071FD3F8
• Base-36: 11JKAWOO

Squares and roots of 81723905016

• 81723905016 squared (81723905016²) is 6678796651064189960256
• 81723905016 cubed (81723905016³) is 545817343132748755630942159044096
• The square root of 81723905016 is 285873.9320329853
• The cube root of 81723905016 is 4339.6000292563

Scales and comparisons

• 81,723,905,016 seconds is equal to 2,598 years, 29 weeks, 3 days, 12 hours, 43 minutes, 36 seconds.
• To count from 1 to 81,723,905,016 would take you about five thousand, one hundred ninety-seven 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 81723905016 cubic inches would be around 361.6 feet tall.

Recreational maths with 81723905016

• 81723905016 backwards is 61050932718
• The number of decimal digits it has is: 11
• The sum of 81723905016's digits is 42
• More coming soon!