81790537368

Names of 81790537368

• Cardinal: 81790537368 can be written as Eighty-one billion, seven hundred ninety million, five hundred thirty-seven thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1790537368 × 10¹⁰

Factors of 81790537368

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1513

Divisors of 81790537368

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 12 24 37 74 111 148 222 281 296 433 444 562 757 843 866 888 1124 1299 1514 1686 1732 2248 2271 2598 3028 3372 3464 4542 5196 6056 6744 9084 10392 10397 16021 18168 20794 28009 31191 32042 41588 48063 56018 62382 64084 83176 84027 96126 112036 121673 124764 128168 168054 192252 212717 224072 243346 249528 327781 336108 365019 384504 425434 486692 638151 655562 672216 730038 850868 973384 983343 1276302 1311124 1460076 1701736 1966686 2552604 2622248 2920152 3933372 4501901 5105208 7866744 7870529 9003802 12127897 13505703 15741058 18007604 23611587 24255794 27011406 31482116 36015208 36383691 47223174 48511588 54022812 62964232 72767382 92106461 94446348 97023176 108045624 145534764 184212922 188892696 276319383 291069528 368425844 552638766 736851688 1105277532 2210555064 3407939057 6815878114 10223817171 13631756228 20447634342 27263512456 40895268684 81790537368
• Sum of all divisors σ(n): 211515837120
• Sum of proper divisors (its aliquot sum) s(n): 129725299752
• 81790537368 is an abundant number, because the sum of its proper divisors (129725299752) is greater than itself. Its abundance is 47934762384

Bases of 81790537368

• Binary: 1001100001011000110001000111010011000₂
• Hexadecimal: 0x130B188E98
• Base-36: 11KNZ2JC

Squares and roots of 81790537368

• 81790537368 squared (81790537368²) is 6689692002946204367424
• 81790537368 cubed (81790537368³) is 547153503747382294407557473900032
• The square root of 81790537368 is 285990.4497846039
• The cube root of 81790537368 is 4340.7791179833

Scales and comparisons

• 81,790,537,368 seconds is equal to 2,600 years, 35 weeks, 4 days, 17 hours, 42 minutes, 48 seconds.
• To count from 1 to 81,790,537,368 would take you about five thousand, two hundred one 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 81790537368 cubic inches would be around 361.7 feet tall.

Recreational maths with 81790537368

• 81790537368 backwards is 86373509718
• The number of decimal digits it has is: 11
• The sum of 81790537368's digits is 57
• More coming soon!