640663721984

Names of 640663721984

• Cardinal: 640663721984 can be written as Six hundred forty billion, six hundred sixty-three million, seven hundred twenty-one thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 6.40663721984 × 10¹¹

Factors of 640663721984

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 2898

Divisors of 640663721984

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 32 44 52 64 71 88 104 121 128 142 143 176 208 242 256 284 286 352 416 484 512 568 572 704 781 832 923 968 1024 1136 1144 1408 1562 1573 1664 1846 1936 2048 2272 2288 2801 2816 3124 3146 3328 3692 3872 4544 4576 5602 5632 6248 6292 6656 7384 7744 8591 9088 9152 10153 11204 11264 12496 12584 13312 14768 15488 17182 18176 18304 20306 22408 22528 24992 25168 26624 29536 30811 30976 34364 36352 36413 36608 40612 44816 49984 50336 59072 61622 61952 68728 72704 72826 73216 81224 89632 99968 100672 111683 118144 123244 123904 137456 145408 145652 146432 162448 179264 198871 199936 201344 223366 236288 246488 247808 274912 291304 292864 324896 338921 358528 397742 399872 400543 402688 446732 472576 492976 549824 582608 649792 677842 717056 795484 799744 801086 805376 893464 945152 985952 1099648 1165216 1299584 1355684 1434112 1590968 1599488 1602172 1610752 1786928 1890304 1971904 2187581 2199296 2330432 2585323 2599168 2711368 2868224 3181936 3204344 3221504 3573856 3943808 4375162 4398592 4405973 4660864 5170646 5198336 5422736 5736448 6363872 6408688 7147712 7887616 8750324 8797184 8811946 9321728 10341292 10396672 10845472 12727744 12817376 14295424 15775232 17500648 17594368 17623892 18643456 20682584 20793344 21690944 24063391 25455488 25634752 28438553 28590848 31550464 35001296 35247784 37286912 41365168 43381888 48126782 50910976 51269504 56877106 57181696 63100928 70002592 70495568 74573824 82730336 86763776 96253564 101821952 102539008 113754212 114363392 140005184 140991136 165460672 173527552 192507128 203643904 205078016 227508424 228726784 280010368 281982272 312824083 330921344 347055104 385014256 407287808 410156032 455016848 560020736 563964544 625648166 661842688 694110208 770028512 820312064 910033696 1120041472 1127929088 1251296332 1323685376 1540057024 1820067392 2240082944 2255858176 2502592664 2647370752 3080114048 3640134784 4480165888 4511716352 5005185328 5294741504 6160228096 7280269568 9023432704 10010370656 12320456192 14560539136 20020741312 24640912384 29121078272 40041482624 49281824768 58242156544 80082965248 160165930496 320331860992 640663721984
• Sum of all divisors σ(n): 1538275808160
• Sum of proper divisors (its aliquot sum) s(n): 897612086176
• 640663721984 is an abundant number, because the sum of its proper divisors (897612086176) is greater than itself. Its abundance is 256948364192

Bases of 640663721984

• Binary: 1001010100101010100010001001100000000000₂
• Hexadecimal: 0x952A889800
• Base-36: 86BEMZNK

Squares and roots of 640663721984

• 640663721984 squared (640663721984²) is 410450004666392044896256
• 640663721984 cubed (640663721984³) is 262960427677920895719764200106491904
• The square root of 640663721984 is 800414.7187452265
• The cube root of 640663721984 is 8620.7167843685

Scales and comparisons

• 640,663,721,984 seconds is equal to 20,371 years, 6 weeks, 3 days, 8 hours, 59 minutes, 44 seconds.
• To count from 1 to 640,663,721,984 would take you about forty thousand, seven hundred forty-two 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 640663721984 cubic inches would be around 718.4 feet tall.

Recreational maths with 640663721984

• 640663721984 backwards is 489127366046
• The number of decimal digits it has is: 12
• The sum of 640663721984's digits is 56
• More coming soon!