81344990512

Names of 81344990512

• Cardinal: 81344990512 can be written as Eighty-one billion, three hundred forty-four million, nine hundred ninety thousand, five hundred twelve.

Scientific notation

• Scientific notation: 8.1344990512 × 10¹⁰

Factors of 81344990512

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 381

Divisors of 81344990512

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 8 16 31 62 67 124 134 248 268 281 496 536 562 961 1072 1124 1922 2077 2248 3844 4154 4496 7688 8308 8711 15376 16616 17422 18827 33232 34844 37654 64387 69688 75308 78961 128774 139376 150616 157922 257548 270041 301232 315844 515096 540082 583637 631688 1030192 1080164 1167274 1263376 2160328 2334548 2447791 4320656 4669096 4895582 5290387 9338192 9791164 10580774 18092747 19582328 21161548 36185494 39164656 42323096 72370988 75881521 84646192 144741976 151763042 164001997 289483952 303526084 328003994 607052168 656007988 1214104336 1312015976 2624031952 5084061907 10168123814 20336247628 40672495256 81344990512
• Sum of all divisors σ(n): 165874934292
• Sum of proper divisors (its aliquot sum) s(n): 84529943780
• 81344990512 is an abundant number, because the sum of its proper divisors (84529943780) is greater than itself. Its abundance is 3184953268

Bases of 81344990512

• Binary: 1001011110000100010100000110100110000₂
• Hexadecimal: 0x12F08A0D30
• Base-36: 11DAPGDS

Squares and roots of 81344990512

• 81344990512 squared (81344990512²) is 6617007481397370022144
• 81344990512 cubed (81344990512³) is 538260410792102080953056909897728
• The square root of 81344990512 is 285210.4319831237
• The cube root of 81344990512 is 4332.8827564541

Scales and comparisons

• 81,344,990,512 seconds is equal to 2,586 years, 26 weeks, 6 days, 22 hours, 41 minutes, 52 seconds.
• To count from 1 to 81,344,990,512 would take you about five thousand, one hundred seventy-three 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 81344990512 cubic inches would be around 361.1 feet tall.

Recreational maths with 81344990512

• 81344990512 backwards is 21509944318
• The number of decimal digits it has is: 11
• The sum of 81344990512's digits is 46
• More coming soon!