642743921664

Names of 642743921664

• Cardinal: 642743921664 can be written as Six hundred forty-two billion, seven hundred forty-three million, nine hundred twenty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 6.42743921664 × 10¹¹

Factors of 642743921664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 403

Divisors of 642743921664

• Number of divisors d(n): 880
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 19 24 26 27 32 36 38 39 48 52 54 57 64 72 76 78 81 96 104 108 114 117 128 137 144 152 156 162 171 192 208 216 228 229 234 247 256 274 288 304 312 324 342 351 384 411 416 432 456 458 468 494 512 513 548 576 608 624 648 684 687 702 741 768 822 832 864 912 916 936 988 1024 1026 1053 1096 1152 1216 1233 1248 1296 1368 1374 1404 1482 1536 1539 1644 1664 1728 1781 1824 1832 1872 1976 2052 2061 2106 2192 2223 2304 2432 2466 2496 2592 2603 2736 2748 2808 2964 2977 3072 3078 3288 3328 3456 3562 3648 3664 3699 3744 3952 4104 4122 4212 4351 4384 4446 4608 4864 4932 4992 5184 5206 5343 5472 5496 5616 5928 5954 6156 6183 6576 6656 6669 6912 7124 7296 7328 7398 7488 7809 7904 8208 8244 8424 8702 8768 8892 8931 9216 9728 9864 9984 10368 10412 10686 10944 10992 11097 11232 11856 11908 12312 12366 13053 13152 13312 13338 13824 14248 14592 14656 14796 14976 15618 15808 16029 16416 16488 16848 17404 17536 17784 17862 18549 19456 19728 19968 20007 20736 20824 21372 21888 21984 22194 22464 23427 23712 23816 24624 24732 26106 26304 26676 26793 27648 28496 29184 29312 29592 29952 31236 31373 31616 32058 32832 32976 33696 33839 34808 35072 35568 35724 37098 39159 39456 39936 40014 41472 41648 42744 43776 43968 44388 44928 46854 47424 47632 48087 49248 49464 52212 52608 53352 53586 56563 56992 58368 58624 59184 59904 62472 62746 63232 64116 65664 65952 67392 67678 69616 70144 70281 71136 71448 74196 78318 78912 80028 80379 82944 83296 85488 87552 87936 88776 89856 93708 94119 94848 95264 96174 98496 98928 101517 104424 105216 106704 107172 113126 113984 117248 117477 118368 119808 124944 125492 126464 128232 131328 131904 134784 135356 139232 140288 140562 142272 142896 144261 148392 156636 157824 160056 160758 166592 169689 170976 175104 175872 177552 179712 187416 188238 189696 190528 192348 196992 197856 203034 208848 210432 210843 213408 214344 226252 227968 234496 234954 236736 241137 249888 250984 252928 256464 262656 263808 269568 270712 278464 281124 282357 284544 285792 288522 296784 304551 313272 315648 320112 321516 333184 339378 341952 351744 352431 355104 359424 374832 376476 379392 381056 384696 393984 395712 406068 407849 417696 420864 421686 426816 428688 452504 455936 469908 473472 482274 499776 501968 509067 512928 525312 527616 539136 541424 556928 562248 564714 569088 571584 577044 593568 596087 609102 626544 631296 640224 643032 666368 678756 683904 703488 704862 710208 749664 752952 758784 762112 769392 787968 791424 812136 815698 835392 843372 847071 853632 857376 905008 911872 913653 939816 946944 964548 999552 1003936 1018134 1025856 1055232 1078272 1082848 1113856 1124496 1129428 1138176 1143168 1154088 1187136 1192174 1218204 1223547 1253088 1262592 1280448 1286064 1332736 1357512 1367808 1409724 1420416 1499328 1505904 1524224 1527201 1538784 1575936 1582848 1624272 1631396 1670784 1686744 1694142 1707264 1714752 1788261 1810016 1823744 1827306 1879632 1893888 1929096 1999104 2007872 2036268 2051712 2110464 2165696 2227712 2248992 2258856 2276352 2286336 2308176 2374272 2384348 2436408 2447094 2506176 2541213 2560896 2572128 2665472 2715024 2735616 2740959 2819448 2840832 2998656 3011808 3048448 3054402 3077568 3165696 3248544 3262792 3341568 3373488 3388284 3414528 3429504 3576522 3620032 3654612 3670641 3759264 3787776 3858192 3998208 4015744 4072536 4103424 4331392 4455424 4497984 4517712 4572672 4581603 4616352 4748544 4768696 4872816 4894188 5012352 5082426 5121792 5144256 5364783 5430048 5471232 5481918 5638896 5681664 5997312 6023616 6108804 6155136 6331392 6497088 6525584 6683136 6746976 6776568 6829056 6859008 7153044 7240064 7309224 7341282 7518528 7716384 7749131 7996416 8031488 8145072 8206848 8662784 8995968 9035424 9145344 9163206 9232704 9497088 9537392 9745632 9788376 10024704 10164852 10243584 10288512 10729566 10860096 10963836 11011923 11277792 11363328 11994624 12047232 12217608 12310272 12994176 13051168 13366272 13493952 13553136 13718016 14306088 14480128 14618448 14682564 15037056 15432768 15498262 16062976 16094349 16290144 16413696 17325568 17991936 18070848 18326412 18465408 18994176 19074784 19491264 19576752 20049408 20329704 20487168 20577024 21459132 21720192 21927672 22023846 22555584 23247393 23989248 24094464 24435216 24620544 25988352 26102336 26987904 27106272 27436032 28612176 28960256 29236896 29365128 30074112 30865536 30996524 32125952 32188698 32580288 33035769 34651136 35983872 36141696 36652824 36930816 38149568 38982528 39153504 40098816 40659408 41154048 42918264 43440384 43855344 44047692 45111168 46494786 48188928 48283047 48870432 49241088 51976704 52204672 53975808 54212544 57224352 57920512 58473792 58730256 60148224 61731072 61993048 64377396 65160576 66071538 69742179 71967744 72283392 73305648 73861632 76299136 77965056 78307008 81318816 82308096 85836528 86880768 87710688 88095384 90222336 92989572 96377856 96566094 97740864 103953408 104409344 107951616 108425088 114448704 116947584 117460512 120296448 123462144 123986096 128754792 130321152 132143076 139484358 144566784 146611296 147723264 152598272 155930112 156614016 162637632 171673056 173761536 175421376 176190768 180444672 185979144 193132188 195481728 208818688 209226537 215903232 216850176 228897408 233895168 234921024 246924288 247972192 257509584 260642304 264286152 278968716 289133568 293222592 305196544 311860224 313228032 325275264 343346112 350842752 352381536 360889344 371958288 386264376 390963456 417637376 418453074 433700352 457794816 467790336 469842048 495944384 515019168 521284608 528572304 557937432 586445184 610393088 626456064 627679611 650550528 686692224 701685504 704763072 743916576 772528752 781926912 836906148 867400704 915589632 935580672 939684096 991888768 1030038336 1057144608 1115874864 1172890368 1252912128 1255359222 1301101056 1373384448 1403371008 1409526144 1487833152 1545057504 1563853824 1673812296 1831179264 1879368192 1983777536 2060076672 2114289216 2231749728 2345780736 2510718444 2602202112 2746768896 2806742016 2819052288 2975666304 3090115008 3347624592 3758736384 3967555072 4120153344 4228578432 4463499456 4691561472 5021436888 5493537792 5638104576 5951332608 6180230016 6695249184 7935110144 8240306688 8457156864 8926998912 10042873776 11276209152 11902665216 12360460032 13390498368 16480613376 16914313728 17853997824 20085747552 23805330432 24720920064 26780996736 33828627456 35707995648 40171495104 49441840128 53561993472 71415991296 80342990208 107123986944 160685980416 214247973888 321371960832 642743921664
• Sum of all divisors σ(n): 2201243906400
• Sum of proper divisors (its aliquot sum) s(n): 1558499984736
• 642743921664 is an abundant number, because the sum of its proper divisors (1558499984736) is greater than itself. Its abundance is 915756063072

Bases of 642743921664

• Binary: 1001010110100110100001011110110000000000₂
• Hexadecimal: 0x95A685EC00
• Base-36: 879T4W00

Squares and roots of 642743921664

• 642743921664 squared (642743921664²) is 413119748836018168528896
• 642743921664 cubed (642743921664³) is 265530207483709016894617480744402944
• The square root of 642743921664 is 801713.1168092483
• The cube root of 642743921664 is 8630.0370344293

Scales and comparisons

• 642,743,921,664 seconds is equal to 20,437 years, 13 weeks, 6 days, 18 hours, 14 minutes, 24 seconds.
• To count from 1 to 642,743,921,664 would take you about forty thousand, eight hundred seventy-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 642743921664 cubic inches would be around 719.2 feet tall.

Recreational maths with 642743921664

• 642743921664 backwards is 466129347246
• 642743921664 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 642743921664's digits is 54
• More coming soon!