640913564720

Names of 640913564720

• Cardinal: 640913564720 can be written as Six hundred forty billion, nine hundred thirteen million, five hundred sixty-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.4091356472 × 10¹¹

Factors of 640913564720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 8728

Divisors of 640913564720

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 19 20 22 26 31 38 40 44 52 55 62 65 76 80 88 95 104 110 121 124 130 143 152 155 176 190 208 209 220 242 247 248 260 286 304 310 341 380 403 418 440 484 494 496 520 572 589 605 620 682 715 760 806 836 880 968 988 1040 1045 1144 1178 1210 1235 1240 1364 1430 1520 1573 1612 1672 1705 1936 1976 2015 2090 2288 2299 2356 2420 2470 2480 2717 2728 2860 2945 3146 3224 3344 3410 3751 3952 4030 4180 4433 4598 4712 4840 4940 5434 5456 5720 5890 6292 6448 6479 6820 7502 7657 7865 8060 8360 8647 8866 9196 9424 9680 9880 10868 11440 11495 11780 12584 12958 13585 13640 15004 15314 15730 16120 16720 17294 17732 18392 18755 19760 21736 22165 22990 23560 25168 25916 27170 27280 29887 30008 30628 31460 32240 32395 34588 35464 36784 37510 38285 43235 43472 44330 45980 47120 48763 51832 54340 59774 60016 61256 62920 64790 69176 70928 71269 75020 76570 84227 86470 88660 91960 95117 97526 103664 108680 112411 119548 122512 125840 129580 138352 142538 149435 150040 153140 164293 168454 172940 177320 183920 190234 195052 217360 224822 239096 243815 259160 268057 285076 298870 300080 306280 328586 336908 345880 354640 356345 380468 390104 421135 449644 475585 478192 487630 518320 536114 562055 570152 597740 612560 657172 673816 691760 712690 760936 780208 821465 842270 899288 926497 951170 975260 1046287 1072228 1124110 1140304 1195480 1236521 1314344 1340285 1347632 1425380 1521872 1642930 1684540 1798576 1807223 1852994 1902340 1950520 2092574 2135809 2144456 2248220 2390960 2473042 2628688 2680570 2850760 2948627 3285860 3369080 3484741 3614446 3705988 3804680 3901040 4185148 4271618 4288912 4496440 4632485 4946084 5093083 5231435 5361140 5701520 5897254 6182605 6571720 6738160 6969482 7228892 7411976 7609360 8370296 8543236 8992880 9036115 9264970 9892168 10186166 10462870 10679045 10722280 11794508 12365210 13143440 13601731 13938964 14457784 14743135 14823952 16740592 17086472 17423705 18072230 18529940 19784336 19879453 20372332 20925740 21358090 21444560 23493899 23589016 24730420 25465415 27203462 27877928 28915568 29486270 32434897 34172944 34847410 36144460 37059880 38332151 39758906 40744664 41851480 42716180 46987798 47178032 49460840 50930830 54406924 55755856 56023913 58972540 64869794 66210079 68008655 69694820 72288920 74119760 76664302 79517812 81489328 83702960 85432360 93975596 98921680 99397265 101861660 108813848 112047826 117469495 117945080 129739588 132420158 136017310 139389640 144577840 153328604 159035624 162174485 170864720 187951192 191660755 198794530 203723320 217627696 224095652 234938990 235890160 258432889 259479176 264840316 272034620 278779280 280119565 306657208 318071248 324348970 331050395 375902384 383321510 397589060 407446640 421653661 448191304 469877980 516865778 518958352 529680632 544069240 560239130 613314416 616263043 648697940 662100790 728310869 766643020 795178120 843307322 896382608 939755960 1033731556 1059361264 1088138480 1120478260 1232526086 1292164445 1297395880 1324201580 1456621738 1533286040 1590356240 1686614644 1879511920 2067463112 2108268305 2240956520 2465052172 2584328890 2594791760 2648403160 2913243476 3066572080 3081315215 3373229288 3641554345 4134926224 4216536610 4481913040 4930104344 5168657780 5296806320 5826486952 6162630430 6746458576 7283108690 8011419559 8433073220 9860208688 10337315560 11652973904 12325260860 14566217380 16022839118 16866146440 20674631120 24650521720 29132434760 32045678236 33732292880 40057097795 49301043440 58264869520 64091356472 80114195590 128182712944 160228391180 320456782360 640913564720
• Sum of all divisors σ(n): 1916850647040
• Sum of proper divisors (its aliquot sum) s(n): 1275937082320
• 640913564720 is an abundant number, because the sum of its proper divisors (1275937082320) is greater than itself. Its abundance is 635023517600

Bases of 640913564720

• Binary: 1001010100111001011011001110010000110000₂
• Hexadecimal: 0x95396CE430
• Base-36: 86FJDZJK

Squares and roots of 640913564720

• 640913564720 squared (640913564720²) is 410770197442097628678400
• 640913564720 cubed (640913564720³) is 263268191523353016990532246466048000
• The square root of 640913564720 is 800570.7743354113
• The cube root of 640913564720 is 8621.8372596275

Scales and comparisons

• 640,913,564,720 seconds is equal to 20,379 years, 3 weeks, 4 days, 1 hour, 45 minutes, 20 seconds.
• To count from 1 to 640,913,564,720 would take you about forty thousand, seven hundred fifty-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 640913564720 cubic inches would be around 718.5 feet tall.

Recreational maths with 640913564720

• 640913564720 backwards is 027465319046
• The number of decimal digits it has is: 12
• The sum of 640913564720's digits is 47
• More coming soon!