644643290016

Names of 644643290016

• Cardinal: 644643290016 can be written as Six hundred forty-four billion, six hundred forty-three million, two hundred ninety thousand and sixteen.

Scientific notation

• Scientific notation: 6.44643290016 × 10¹¹

Factors of 644643290016

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 298

Divisors of 644643290016

• Number of divisors d(n): 540
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 66 72 81 88 96 99 108 109 121 132 144 162 173 176 198 216 218 242 264 288 297 324 327 346 352 363 396 432 436 484 519 528 594 648 654 692 726 792 864 872 891 968 981 1038 1056 1089 1188 1199 1296 1308 1384 1452 1557 1584 1744 1782 1903 1936 1962 2076 2178 2376 2398 2592 2616 2768 2904 2943 3114 3168 3267 3488 3564 3597 3806 3872 3924 4152 4356 4671 4752 4796 5232 5536 5709 5808 5886 6228 6534 7128 7194 7612 7848 8304 8712 8829 9342 9504 9592 9801 10464 10791 11418 11616 11772 11881 12456 13068 13189 14013 14256 14388 15224 15696 16608 17127 17424 17658 18684 18857 19184 19602 20933 21582 22836 23544 23762 24912 26136 26378 28026 28512 28776 30448 31392 32373 34254 34848 35316 35643 37368 37714 38368 39204 39567 41866 43164 45672 47088 47524 49824 51381 52272 52756 56052 56571 57552 60896 62799 64746 68508 70632 71286 74736 75428 78408 79134 83732 86328 91344 94176 95048 97119 102762 104544 105512 106929 112104 113142 115104 118701 125598 129492 130691 137016 141264 142572 149472 150856 154143 156816 158268 167464 169713 172656 182688 188397 190096 194238 205524 207427 211024 213858 224208 226284 237402 251196 258984 261382 274032 282528 285144 301712 308286 313632 316536 320787 334928 339426 345312 356103 376794 380192 388476 392073 411048 414854 422048 427716 448416 452568 474804 502392 509139 517968 522764 548064 565191 570288 603424 616572 622281 633072 641574 669856 678852 712206 753588 776952 784146 822096 829708 855432 905136 949608 962361 1004784 1018278 1035936 1045528 1068309 1130382 1140576 1176219 1233144 1244562 1266144 1283148 1357704 1424412 1437601 1507176 1527417 1553904 1568292 1644192 1659416 1695573 1710864 1810272 1866843 1899216 1924722 2009568 2036556 2055413 2091056 2136618 2260764 2281697 2352438 2466288 2489124 2566296 2715408 2848824 2875202 3014352 3054834 3107808 3136584 3318832 3391146 3421728 3528657 3733686 3798432 3849444 4073112 4110826 4182112 4273236 4312803 4521528 4563394 4704876 4932576 4978248 5132592 5430816 5600529 5697648 5750404 6028704 6109668 6166239 6273168 6637664 6782292 6845091 7057314 7467372 7698888 8146224 8221652 8546472 8625606 9043056 9126788 9409752 9956496 10265184 10585971 11201058 11395296 11500808 12219336 12332478 12546336 12938409 13564584 13690182 14114628 14934744 15397776 16292448 16443304 16801587 17092944 17251212 18086112 18253576 18498717 18819504 19912992 20535273 21171942 22402116 22609543 23001616 24438672 24664956 25876818 27129168 27380364 28229256 29869488 30795552 32886608 33603174 34185888 34502424 36507152 36997434 37639008 38815227 41070546 42343884 44804232 45219086 46003232 48877344 49329912 51753636 54258336 54760728 55496151 56458512 59738976 61605819 65773216 67206348 67828629 69004848 73014304 73994868 77630454 82141092 84687768 89608464 90438172 98659824 103507272 109521456 110992302 112917024 116445681 123211638 134412696 135657258 138009696 147989736 155260908 164282184 166488453 169375536 179216928 180876344 184817457 197319648 203485887 207014544 219042912 221984604 232891362 246423276 248704973 268825392 271314516 295979472 310521816 328564368 332976906 338751072 361752688 369634914 406971774 414029088 443969208 465782724 492846552 497409946 537650784 542629032 591958944 610457661 621043632 657128736 665953812 723505376 739269828 746114919 813943548 887938416 931565448 985693104 994819892 1085258064 1220915322 1242087264 1331907624 1478539656 1492229838 1627887096 1775876832 1831372983 1863130896 1971386208 1989639784 2170516128 2238344757 2441830644 2663815248 2957079312 2984459676 3255774192 3662745966 3726261792 3979279568 4476689514 4883661288 5327630496 5914158624 5968919352 6511548384 6715034271 7325491932 7958559136 8953379028 9767322576 11937838704 13430068542 14650983864 17906758056 19534645152 20145102813 23875677408 26860137084 29301967728 35813516112 40290205626 53720274168 58603935456 71627032224 80580411252 107440548336 161160822504 214881096672 322321645008 644643290016
• Sum of all divisors σ(n): 2115349888806
• Sum of proper divisors (its aliquot sum) s(n): 1470706598790
• 644643290016 is an abundant number, because the sum of its proper divisors (1470706598790) is greater than itself. Its abundance is 826063308774

Bases of 644643290016

• Binary: 1001011000010111101110111111101110100000₂
• Hexadecimal: 0x9617BBFBA0
• Base-36: 8857YY00

Squares and roots of 644643290016

• 644643290016 squared (644643290016²) is 415564971362652685280256
• 644643290016 cubed (644643290016³) is 267891170354625249708201242846724096
• The square root of 644643290016 is 802896.8115617349
• The cube root of 644643290016 is 8638.5295298427

Scales and comparisons

• 644,643,290,016 seconds is equal to 20,497 years, 34 weeks, 3 days, 4 hours, 33 minutes, 36 seconds.
• To count from 1 to 644,643,290,016 would take you about forty thousand, nine hundred ninety-five 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 644643290016 cubic inches would be around 719.9 feet tall.

Recreational maths with 644643290016

• 644643290016 backwards is 610092346446
• The number of decimal digits it has is: 12
• The sum of 644643290016's digits is 45
• More coming soon!