64139751872

Names of 64139751872

• Cardinal: 64139751872 can be written as Sixty-four billion, one hundred thirty-nine million, seven hundred fifty-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 6.4139751872 × 10¹⁰

Factors of 64139751872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 73

Divisors of 64139751872

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 4 7 8 14 16 23 28 32 41 46 49 56 64 82 92 98 112 161 164 184 196 224 287 322 328 368 392 448 529 574 644 656 736 784 943 1058 1127 1148 1288 1312 1472 1568 1681 1886 2009 2116 2254 2296 2576 2624 3136 3362 3703 3772 4018 4232 4508 4592 5152 6601 6724 7406 7544 8036 8464 9016 9184 10304 11767 12167 13202 13448 14812 15088 16072 16928 18032 18368 21689 23534 24334 25921 26404 26896 29624 30176 32144 33856 36064 38663 43378 46207 47068 48668 51842 52808 53792 59248 60352 64288 72128 77326 82369 85169 86756 92414 94136 97336 103684 105616 107584 118496 128576 151823 154652 164738 170338 173512 184828 188272 194672 207368 211232 236992 270641 303646 309304 329476 340676 347024 369656 376544 389344 414736 422464 498847 541282 596183 607292 618608 658952 681352 694048 739312 753088 778688 829472 889249 997694 1062761 1082564 1192366 1214584 1237216 1317904 1362704 1388096 1478624 1658944 1778498 1894487 1995388 2125522 2165128 2384732 2429168 2474432 2635808 2725408 2957248 3491929 3556996 3788974 3990776 4251044 4330256 4769464 4858336 5271616 5450816 6224743 6983858 7113992 7577948 7981552 8502088 8660512 9538928 9716672 12449486 13967716 14227984 15155896 15963104 17004176 17321024 19077856 20452727 24443503 24898972 27935432 28455968 30311792 31926208 34008352 38155712 40905454 43573201 48887006 49797944 55870864 56911936 60623584 68016704 81810908 87146402 97774012 99595888 111741728 121247168 143169089 163621816 174292804 195548024 199191776 223483456 286338178 327243632 348585608 391096048 398383552 572676356 654487264 697171216 782192096 1002183623 1145352712 1308974528 1394342432 1564384192 2004367246 2290705424 2788684864 4008734492 4581410848 8017468984 9162821696 16034937968 32069875936 64139751872
• Sum of all divisors σ(n): 158653977840
• Sum of proper divisors (its aliquot sum) s(n): 94514225968
• 64139751872 is an abundant number, because the sum of its proper divisors (94514225968) is greater than itself. Its abundance is 30374474096

Bases of 64139751872

• Binary: 111011101111000001101111000111000000₂
• Hexadecimal: 0xEEF06F1C0
• Base-36: TGR5HA8

Squares and roots of 64139751872

• 64139751872 squared (64139751872²) is 4113907770201727504384
• 64139751872 cubed (64139751872³) is 263865023605031597516947552206848
• The square root of 64139751872 is 253258.2710830981
• The cube root of 64139751872 is 4002.9093806963

Scales and comparisons

• 64,139,751,872 seconds is equal to 2,039 years, 23 weeks, 1 day, 5 hours, 44 minutes, 32 seconds.
• To count from 1 to 64,139,751,872 would take you about four thousand and seventy-eight 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 64139751872 cubic inches would be around 333.6 feet tall.

Recreational maths with 64139751872

• 64139751872 backwards is 27815793146
• The number of decimal digits it has is: 11
• The sum of 64139751872's digits is 53
• More coming soon!