640729526681664

Names of 640729526681664

• Cardinal: 640729526681664 can be written as Six hundred forty trillion, seven hundred twenty-nine billion, five hundred twenty-six million, six hundred eighty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.40729526681664 × 10¹⁴

Factors of 640729526681664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 929304668

Divisors of 640729526681664

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 32 36 38 42 48 54 56 57 63 64 72 76 81 84 96 108 112 114 126 133 144 152 162 168 171 189 192 216 224 228 252 266 288 304 324 336 342 378 399 432 448 456 504 513 532 567 576 608 648 672 684 756 798 864 912 1008 1026 1064 1134 1197 1216 1296 1344 1368 1512 1539 1596 1728 1824 2016 2052 2128 2268 2394 2592 2736 3024 3078 3192 3591 3648 4032 4104 4256 4536 4788 5184 5472 6048 6156 6384 7182 8208 8512 9072 9576 10773 10944 12096 12312 12768 14364 16416 18144 19152 21546 24624 25536 28728 32832 36288 38304 43092 49248 57456 76608 86184 98496 114912 172368 229824 344736 689472 929304637 1858609274 2787913911 3717218548 5575827822 6505132459 7434437096 8363741733 11151655644 13010264918 14868874192 16727483466 17656788103 19515397377 22303311288 25091225199 26020529836 29737748384 33454966932 35313576206 39030794754 44606622576 50182450398 52041059672 52970364309 58546192131 59475496768 66909933864 70627152412 75273675597 78061589508 89213245152 100364900796 104082119344 105940728618 117092384262 123597516721 133819867728 141254304824 150547351194 156123179016 158911092927 175638576393 178426490304 200729801592 208164238688 211881457236 234184768524 247195033442 267639735456 282508609648 301094702388 312246358032 317822185854 351277152786 370792550163 401459603184 416328477376 423762914472 468369537048 476733278781 494390066884 526915729179 535279470912 565017219296 602189404776 624492716064 635644371708 702554305572 741585100326 802919206368 847525828944 936739074096 953466557562 988780133768 1053831458358 1112377650489 1130034438592 1204378809552 1248985432128 1271288743416 1405108611144 1430199836343 1483170200652 1605838412736 1695051657888 1873478148192 1906933115124 1977560267536 2107662916716 2224755300978 2408757619104 2542577486832 2810217222288 2860399672686 2966340401304 3337132951467 3390103315776 3746956296384 3813866230248 3955120535072 4215325833432 4449510601956 4817515238208 5085154973664 5620434444576 5720799345372 5932680802608 6674265902934 7627732460496 7910241070144 8430651666864 8899021203912 10011398854401 10170309947328 11240868889152 11441598690744 11865361605216 13348531805868 15255464920992 16861303333728 17798042407824 20022797708802 22883197381488 23730723210432 26697063611736 30510929841984 33722606667456 35596084815648 40045595417604 45766394762976 53394127223472 71192169631296 80091190835208 91532789525952 106788254446944 160182381670416 213576508893888 320364763340832 640729526681664
• Sum of all divisors σ(n): 2284899899543360
• Sum of proper divisors (its aliquot sum) s(n): 1644170372861696
• 640729526681664 is an abundant number, because the sum of its proper divisors (1644170372861696) is greater than itself. Its abundance is 1003440846180032

Bases of 640729526681664

• Binary: 10010001101011110101110111110101011100000001000000₂
• Hexadecimal: 0x246BD77D5C040
• Base-36: 6B4B2X1G00

Squares and roots of 640729526681664

• 640729526681664 squared (640729526681664²) is 410534326361709179687193808896
• 640729526681664 cubed (640729526681664³) is 263041464616313698295852643706359943843282944
• The square root of 640729526681664 is 25312635.7118665933
• The cube root of 640729526681664 is 86210.1192840985

Scales and comparisons

• 640,729,526,681,664 seconds is equal to 20,373,217 years, 2 weeks, 1 day, 6 hours, 14 minutes, 24 seconds.
• To count from 1 to 640,729,526,681,664 would take you about fifty million, nine hundred thirty-three thousand and 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 640729526681664 cubic inches would be around 7184.2 feet tall.

Recreational maths with 640729526681664

• 640729526681664 backwards is 466186625927046
• 640729526681664 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 640729526681664's digits is 72
• More coming soon!