640491625944

Names of 640491625944

• Cardinal: 640491625944 can be written as Six hundred forty billion, four hundred ninety-one million, six hundred twenty-five thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 6.40491625944 × 10¹¹

Factors of 640491625944

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 132

Divisors of 640491625944

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 24 27 29 36 38 54 57 58 72 76 79 81 87 108 114 116 152 158 162 171 174 216 228 232 237 243 261 316 324 342 348 456 474 486 513 522 551 632 648 684 696 711 729 783 841 948 972 1026 1044 1102 1368 1422 1458 1501 1539 1566 1653 1682 1896 1944 2052 2088 2133 2187 2204 2291 2349 2523 2844 2916 3002 3078 3132 3306 3364 4104 4266 4374 4408 4503 4582 4617 4698 4959 5046 5688 5832 6004 6156 6264 6399 6612 6728 6873 7047 7569 8532 8748 9006 9164 9234 9396 9918 10092 12008 12312 12798 13224 13509 13746 13851 14094 14877 15138 15979 17064 17496 18012 18328 18468 18792 19197 19836 20184 20619 21141 22707 24389 25596 27018 27492 27702 28188 29754 30276 31958 36024 36936 38394 39672 40527 41238 41553 42282 43529 44631 45414 47937 48778 51192 54036 54984 55404 56376 57591 59508 60552 61857 63423 63916 66439 68121 73167 76788 81054 82476 83106 84564 87058 89262 90828 95874 97556 108072 110808 115182 119016 121581 123714 126846 127832 130587 132878 133893 136242 143811 146334 153576 162108 164952 166212 169128 172773 174116 178524 181656 185571 191748 195112 199317 204363 219501 230364 243162 247428 253692 261174 265756 267786 272484 287622 292668 324216 332424 345546 348232 357048 364743 371142 383496 391761 398634 401679 408726 431433 439002 460728 463391 486324 494856 507384 522348 531512 535572 544968 556713 575244 585336 597951 613089 658503 691092 729486 742284 783522 797268 803358 817452 862866 878004 926782 972648 1044696 1071144 1094229 1113426 1150488 1175283 1195902 1205037 1226178 1262341 1294299 1317006 1382184 1390173 1458972 1484568 1567044 1594536 1606716 1634904 1670139 1725732 1756008 1793853 1839267 1853564 1926731 1975509 2188458 2226852 2350566 2391804 2410074 2452356 2524682 2588598 2634012 2780346 2917944 3134088 3213432 3282687 3340278 3451464 3525849 3587706 3678534 3707128 3787023 3853462 3882897 3951018 4170519 4376916 4453704 4701132 4783608 4820148 4904712 5010417 5049364 5177196 5268024 5381559 5560692 5780193 5926527 6565374 6680556 7051698 7175412 7357068 7574046 7706924 7765794 7902036 8341038 8753832 9402264 9640296 10020834 10098728 10354392 10577547 10763118 11121384 11361069 11560386 11648691 11853054 12511557 13130748 13361112 14103396 14350824 14714136 15148092 15413848 15531588 15804072 16144677 16682076 17340579 17779581 20041668 21155094 21526236 22722138 23120772 23297382 23706108 25023114 26261496 28206792 30296184 31063176 31732641 32289354 33364152 34083207 34681158 34946073 35559162 36607889 37534671 40083336 42310188 43052472 45444276 46241544 46594764 47412216 48434031 50046228 52021737 53338743 63465282 64578708 68166414 69362316 69892146 71118324 73215778 75069342 84620376 90888552 93189528 95197923 96868062 100092456 102249621 104043474 106677486 109823667 112604013 126930564 129157416 136332828 138724632 139784292 142236648 145302093 146431556 150138684 156065211 190395846 193736124 204499242 208086948 213354972 219647334 225208026 253861128 272665656 279568584 290604186 292863112 300277368 306748863 312130422 329471001 337812039 380791692 387472248 408998484 416173896 426709944 439294668 450416052 468195633 581208372 613497726 624260844 658942002 675624078 761583384 817996968 878589336 900832104 920246589 936391266 988413003 1013436117 1162416744 1226995452 1248521688 1317884004 1351248156 1404586899 1840493178 1872782532 1976826006 2026872234 2453990904 2635768008 2702496312 2760739767 2809173798 2965239009 3680986356 3745565064 3953652012 4053744468 4213760697 5521479534 5618347596 5930478018 7361972712 7907304024 8107488936 8427521394 8895717027 11042959068 11236695192 11860956036 16855042788 17791434054 22085918136 23721912072 26687151081 33710085576 35582868108 53374302162 71165736216 80061453243 106748604324 160122906486 213497208648 320245812972 640491625944
• Sum of all divisors σ(n): 1988467200000
• Sum of proper divisors (its aliquot sum) s(n): 1347975574056
• 640491625944 is an abundant number, because the sum of its proper divisors (1347975574056) is greater than itself. Its abundance is 707483948112

Bases of 640491625944

• Binary: 1001010100100000010001101001110111011000₂
• Hexadecimal: 0x9520469DD8
• Base-36: 868K6DI0

Squares and roots of 640491625944

• 640491625944 squared (640491625944²) is 410229522904388813891136
• 640491625944 cubed (640491625944³) is 262748574135263380662699310049232384
• The square root of 640491625944 is 800307.2072298237
• The cube root of 640491625944 is 8619.9448119951

Scales and comparisons

• 640,491,625,944 seconds is equal to 20,365 years, 33 weeks, 6 days, 12 hours, 32 minutes, 24 seconds.
• To count from 1 to 640,491,625,944 would take you about forty thousand, seven hundred thirty-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 640491625944 cubic inches would be around 718.3 feet tall.

Recreational maths with 640491625944

• 640491625944 backwards is 449526194046
• 640491625944 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640491625944's digits is 54
• More coming soon!