81997500813312

Names of 81997500813312

• Cardinal: 81997500813312 can be written as Eighty-one trillion, nine hundred ninety-seven billion, five hundred million, eight hundred thirteen thousand, three hundred twelve.

Scientific notation

• Scientific notation: 8.1997500813312 × 10¹³

Factors of 81997500813312

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 953281969

Divisors of 81997500813312

• Number of divisors d(n): 104
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 1024 1344 1536 1792 2048 2688 3072 3584 4096 5376 6144 7168 10752 12288 14336 21504 28672 43008 86016 953281957 1906563914 2859845871 3813127828 5719691742 6672973699 7626255656 11439383484 13345947398 15252511312 20018921097 22878766968 26691894796 30505022624 40037842194 45757533936 53383789592 61010045248 80075684388 91515067872 106767579184 122020090496 160151368776 183030135744 213535158368 244040180992 320302737552 366060271488 427070316736 488080361984 640605475104 732120542976 854140633472 976160723968 1281210950208 1464241085952 1708281266944 1952321447936 2562421900416 2928482171904 3416562533888 3904642895872 5124843800832 5856964343808 6833125067776 10249687601664 11713928687616 13666250135552 20499375203328 27332500271104 40998750406656 81997500813312
• Sum of all divisors σ(n): 249866640575296
• Sum of proper divisors (its aliquot sum) s(n): 167869139761984
• 81997500813312 is an abundant number, because the sum of its proper divisors (167869139761984) is greater than itself. Its abundance is 85871638948672

Bases of 81997500813312

• Binary: 10010101001001110000111111010001001000000000000₂
• Hexadecimal: 0x4A9387E89000
• Base-36: T2D4QVDHC

Squares and roots of 81997500813312

• 81997500813312 squared (81997500813312²) is 6723590139629102101476409344
• 81997500813312 cubed (81997500813312³) is 551317587942613843207836163540621436387328
• The square root of 81997500813312 is 9055247.1425860047
• The cube root of 81997500813312 is 43444.3734844909

Scales and comparisons

• 81,997,500,813,312 seconds is equal to 2,607,266 years, 46 weeks, 2 days, 7 hours, 15 minutes, 12 seconds.
• To count from 1 to 81,997,500,813,312 would take you about six million, five hundred eighteen thousand, one hundred sixty-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 81997500813312 cubic inches would be around 3620.4 feet tall.

Recreational maths with 81997500813312

• 81997500813312 backwards is 21331800579918
• The number of decimal digits it has is: 14
• The sum of 81997500813312's digits is 57
• More coming soon!