81698516168832

Names of 81698516168832

• Cardinal: 81698516168832 can be written as Eighty-one trillion, six hundred ninety-eight billion, five hundred sixteen million, one hundred sixty-eight thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 8.1698516168832 × 10¹³

Factors of 81698516168832

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 23639616952

Divisors of 81698516168832

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 288 384 432 576 864 1152 1728 3456 23639616947 47279233894 70918850841 94558467788 141837701682 189116935576 212756552523 283675403364 378233871152 425513105046 567350806728 638269657569 756467742304 851026210092 1134701613456 1276539315138 1512935484608 1702052420184 2269403226912 2553078630276 3025870969216 3404104840368 4538806453824 5106157260552 6808209680736 9077612907648 10212314521104 13616419361472 20424629042208 27232838722944 40849258084416 81698516168832
• Sum of all divisors σ(n): 241124092869600
• Sum of proper divisors (its aliquot sum) s(n): 159425576700768
• 81698516168832 is an abundant number, because the sum of its proper divisors (159425576700768) is greater than itself. Its abundance is 77727060531936

Bases of 81698516168832

• Binary: 10010100100110111101011000010001111000010000000₂
• Hexadecimal: 0x4A4DEB08F080
• Base-36: SYJS34TC0

Squares and roots of 81698516168832

• 81698516168832 squared (81698516168832²) is 6674647544188903735128244224
• 81698516168832 cubed (81698516168832³) is 545308800310171953007335618195543312826368
• The square root of 81698516168832 is 9038723.1492524429
• The cube root of 81698516168832 is 43391.5059383355

Scales and comparisons

• 81,698,516,168,832 seconds is equal to 2,597,760 years, 5 weeks, 2 days, 21 hours, 7 minutes, 12 seconds.
• To count from 1 to 81,698,516,168,832 would take you about six million, four hundred ninety-four thousand, four hundred 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 81698516168832 cubic inches would be around 3616 feet tall.

Recreational maths with 81698516168832

• 81698516168832 backwards is 23886161589618
• 81698516168832 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81698516168832's digits is 72
• More coming soon!