81008590912

Names of 81008590912

• Cardinal: 81008590912 can be written as Eighty-one billion, eight million, five hundred ninety thousand, nine hundred twelve.

Scientific notation

• Scientific notation: 8.1008590912 × 10¹⁰

Factors of 81008590912

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 330

Divisors of 81008590912

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 8 16 19 31 32 37 38 62 64 74 76 124 148 152 241 248 296 304 482 496 589 592 608 703 964 992 1147 1178 1184 1216 1406 1928 1984 2294 2356 2368 2812 3856 4579 4588 4712 5624 7471 7712 8917 9158 9176 9424 11248 14942 15424 17834 18316 18352 18848 21793 22496 29884 35668 36632 36704 37696 43586 44992 58081 59768 71336 73264 73408 87172 116162 119536 141949 142672 146528 169423 174344 232324 239072 276427 283898 285344 293056 338846 348688 464648 478144 552854 567796 570688 677692 697376 929296 1103539 1105708 1135592 1355384 1394752 1800511 1858592 2148997 2207078 2211416 2271184 2710768 3601022 3717184 4297994 4414156 4422832 4542368 5252113 5421536 7202044 8595988 8828312 8845664 9084736 10504226 10843072 14404088 17191976 17656624 17691328 21008452 28808176 34209709 34383952 35313248 40830943 42016904 57616352 66618907 68419418 68767904 70626496 81661886 84033808 115232704 133237814 136838836 137535808 163323772 168067616 266475628 273677672 326647544 336135232 532951256 547355344 653295088 1065902512 1094710688 1265759233 1306590176 2131805024 2189421376 2531518466 2613180352 4263610048 5063036932 10126073864 20252147728 40504295456 81008590912
• Sum of all divisors σ(n): 180138750720
• Sum of proper divisors (its aliquot sum) s(n): 99130159808
• 81008590912 is an abundant number, because the sum of its proper divisors (99130159808) is greater than itself. Its abundance is 18121568896

Bases of 81008590912

• Binary: 1001011011100011111010000000001000000₂
• Hexadecimal: 0x12DC7D0040
• Base-36: 117QF8SG

Squares and roots of 81008590912

• 81008590912 squared (81008590912²) is 6562391801547768991744
• 81008590912 cubed (81008590912³) is 531610112855845906678468401430528
• The square root of 81008590912 is 284620.0817089335
• The cube root of 81008590912 is 4326.9016714299

Scales and comparisons

• 81,008,590,912 seconds is equal to 2,575 years, 42 weeks, 5 days, 10 hours, 21 minutes, 52 seconds.
• To count from 1 to 81,008,590,912 would take you about five thousand, one hundred fifty-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 81008590912 cubic inches would be around 360.6 feet tall.

Recreational maths with 81008590912

• 81008590912 backwards is 21909580018
• The number of decimal digits it has is: 11
• The sum of 81008590912's digits is 43
• More coming soon!