640547041680

Names of 640547041680

• Cardinal: 640547041680 can be written as Six hundred forty billion, five hundred forty-seven million, forty-one thousand, six hundred eighty.

Scientific notation

• Scientific notation: 6.4054704168 × 10¹¹

Factors of 640547041680

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 165790

Divisors of 640547041680

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 28 30 35 36 39 40 42 45 48 52 56 59 60 63 65 70 72 78 80 84 90 91 104 105 112 117 118 120 126 130 140 144 156 168 177 180 182 195 208 210 234 236 240 252 260 273 280 295 312 315 336 354 360 364 390 413 420 455 468 472 504 520 531 546 560 585 590 624 630 708 720 728 767 780 819 826 840 885 910 936 944 1008 1040 1062 1092 1170 1180 1239 1260 1365 1416 1456 1534 1560 1638 1652 1680 1770 1820 1872 2065 2124 2184 2301 2340 2360 2478 2520 2655 2730 2832 3068 3120 3276 3304 3540 3640 3717 3835 4095 4130 4248 4368 4602 4680 4720 4956 5040 5310 5369 5460 6136 6195 6552 6608 6903 7080 7280 7434 7670 8190 8260 8496 9204 9360 9912 10620 10738 10920 11505 12272 12390 13104 13806 14160 14868 15340 16107 16380 16520 18408 18585 19824 21240 21476 21840 23010 24780 26845 27612 29736 30680 32214 32760 33040 34515 36816 37170 42480 42952 46020 48321 49560 53690 55224 59472 61360 64428 65520 69030 74340 80535 85904 92040 96642 99120 107380 110448 128856 138060 148680 161070 165701 184080 193284 214760 241605 257712 276120 297360 322140 331402 386568 429520 483210 497103 552240 644280 662804 773136 828505 966420 994206 1159907 1288560 1325608 1491309 1657010 1932840 1988412 2154113 2319814 2485515 2651216 2982618 3314020 3479721 3865680 3976824 4308226 4639628 4971030 5799535 5965236 6462339 6628040 6959442 7456545 7953648 8616452 9279256 9776359 9942060 10439163 10770565 11599070 11930472 12924678 13256080 13918884 14913090 15078791 17232904 17398605 18558512 19387017 19552718 19884120 20878326 21541130 23198140 23860944 25849356 27837768 29329077 29826180 30157582 32311695 34465808 34797210 38774034 39105436 39768240 41756652 43082260 45236373 46396280 48881795 51698712 52195815 55675536 58658154 59652360 60315164 64623390 68434513 69594420 75393955 77548068 78210872 83513304 86164520 87987231 90472746 92792560 96935085 97763590 103397424 104391630 117316308 119304720 120630328 127092667 129246780 135709119 136869026 139188840 146645385 150787910 155096136 156421744 167026608 172329040 175974462 180945492 193870170 195527180 205303539 208783260 226181865 234632616 241260656 254185334 258493560 271418238 273738052 278377680 293290770 301575820 310192272 342172565 351948924 361890984 381278001 387740340 391054360 410607078 417566520 439936155 452363730 469265232 508370668 516987120 542836476 547476104 586581540 603151640 615910617 635463335 678545595 684345130 703897848 723781968 762556002 775480680 782108720 821214156 835133040 879872310 889648669 904727460 1016741336 1026517695 1085672952 1094952208 1143834003 1173163080 1206303280 1231821234 1270926670 1357091190 1368690260 1407795696 1525112004 1550961360 1642428312 1759744620 1779297338 1809454920 1906390005 2033482672 2053035390 2171345904 2287668006 2346326160 2463642468 2541853340 2668946007 2714182380 2737380520 3050224008 3079553085 3284856624 3519489240 3558594676 3618909840 3812780010 4106070780 4448243345 4575336012 4927284936 5083706680 5337892014 5428364760 5474761040 5719170015 6100448016 6159106170 7038978480 7117189352 7625560020 8006838021 8212141560 8896486690 9150672024 9854569872 10167413360 10675784028 10856729520 11438340030 12318212340 13344730035 14234378704 15251120040 16013676042 16424283120 17792973380 18301344048 21351568056 22876680060 24636424680 26689460070 30502240080 32027352084 35585946760 40034190105 42703136112 45753360120 49272849360 53378920140 64054704168 71171893520 80068380210 91506720240 106757840280 128109408336 160136760420 213515680560 320273520840 640547041680
• Sum of all divisors σ(n): 2692485169920
• Sum of proper divisors (its aliquot sum) s(n): 2051938128240
• 640547041680 is an abundant number, because the sum of its proper divisors (2051938128240) is greater than itself. Its abundance is 1411391086560

Bases of 640547041680

• Binary: 1001010100100011100101000011000110010000₂
• Hexadecimal: 0x9523943190
• Base-36: 869H64K0

Squares and roots of 640547041680

• 640547041680 squared (640547041680²) is 410300512604999657222400
• 640547041680 cubed (640547041680³) is 262816779548920080811222365829632000
• The square root of 640547041680 is 800341.8280210025
• The cube root of 640547041680 is 8620.1934058309

Scales and comparisons

• 640,547,041,680 seconds is equal to 20,367 years, 21 weeks, 3 days, 21 hours, 48 minutes.
• To count from 1 to 640,547,041,680 would take you about forty thousand, seven hundred thirty-four 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 640547041680 cubic inches would be around 718.3 feet tall.

Recreational maths with 640547041680

• 640547041680 backwards is 086140745046
• 640547041680 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640547041680's digits is 45
• More coming soon!