64405431680

Names of 64405431680

• Cardinal: 64405431680 can be written as Sixty-four billion, four hundred five million, four hundred thirty-one thousand, six hundred eighty.

Scientific notation

• Scientific notation: 6.440543168 × 10¹⁰

Factors of 64405431680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 569

Divisors of 64405431680

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 109 115 128 137 160 184 218 230 274 293 320 368 436 460 545 548 586 640 685 736 872 920 1090 1096 1172 1370 1465 1472 1744 1840 2180 2192 2344 2507 2740 2930 2944 3151 3488 3680 4360 4384 4688 5014 5480 5860 6302 6739 6976 7360 8720 8768 9376 10028 10960 11720 12535 12604 13478 13952 14720 14933 15755 17440 17536 18752 20056 21920 23440 25070 25208 26956 29866 31510 31937 33695 34880 37504 40112 40141 43840 46880 50140 50416 53912 59732 63020 63874 67390 69760 74665 80224 80282 87680 93760 100280 100832 107824 119464 126040 127748 134780 149330 159685 160448 160564 187520 200560 200705 201664 215648 238928 252080 255496 269560 298660 319370 320896 321128 343459 401120 401410 403328 431296 477856 504160 510992 539120 597320 638740 642256 686918 734551 802240 802820 862592 923243 955712 1008320 1021984 1078240 1194640 1277480 1284512 1373836 1469102 1604480 1605640 1717295 1846486 1911424 2016640 2043968 2156480 2389280 2554960 2569024 2747672 2938204 3211280 3434590 3672755 3692972 4087936 4312960 4375369 4616215 4778560 5109920 5138048 5495344 5876408 6422560 6869180 7345510 7385944 8750738 9232430 9557120 10219840 10990688 11752816 12845120 13738360 14691020 14771888 17501476 18464860 20439680 21876845 21981376 23505632 25690240 27476720 29382040 29543776 35002952 36929720 43753690 43962752 47011264 54953440 58764080 59087552 70005904 73859440 87507380 94022528 100633487 109906880 117528160 118175104 140011808 147718880 175014760 201266974 219813760 235056320 280023616 295437760 350029520 402533948 470112640 503167435 560047232 590875520 700059040 805067896 1006334870 1400118080 1610135792 2012669740 2800236160 3220271584 4025339480 6440543168 8050678960 12881086336 16101357920 32202715840 64405431680
• Sum of all divisors σ(n): 163878422400
• Sum of proper divisors (its aliquot sum) s(n): 99472990720
• 64405431680 is an abundant number, because the sum of its proper divisors (99472990720) is greater than itself. Its abundance is 35067559040

Bases of 64405431680

• Binary: 111011111110110111001110010110000000₂
• Hexadecimal: 0xEFEDCE580
• Base-36: TL5BX4W

Squares and roots of 64405431680

• 64405431680 squared (64405431680²) is 4148059629887147622400
• 64405431680 cubed (64405431680³) is 267157571097262772304557637632000
• The square root of 64405431680 is 253782.2524921711
• The cube root of 64405431680 is 4008.4287200279

Scales and comparisons

• 64,405,431,680 seconds is equal to 2,047 years, 46 weeks, 3 days, 5 hours, 41 minutes, 20 seconds.
• To count from 1 to 64,405,431,680 would take you about four thousand and ninety-five 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 64405431680 cubic inches would be around 334 feet tall.

Recreational maths with 64405431680

• 64405431680 backwards is 08613450446
• The number of decimal digits it has is: 11
• The sum of 64405431680's digits is 41
• More coming soon!