644330964816

Names of 644330964816

• Cardinal: 644330964816 can be written as Six hundred forty-four billion, three hundred thirty million, nine hundred sixty-four thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 6.44330964816 × 10¹¹

Factors of 644330964816

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1350

Divisors of 644330964816

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 33 36 42 44 48 54 56 63 66 72 77 84 88 99 108 112 121 126 132 144 154 168 176 189 198 216 231 242 252 264 297 308 336 363 378 396 432 462 484 504 528 594 616 693 726 756 792 847 924 968 1008 1089 1188 1232 1327 1386 1452 1512 1584 1694 1848 1936 2079 2178 2376 2541 2654 2772 2904 3024 3267 3388 3696 3981 4158 4356 4752 5082 5308 5544 5808 6534 6776 7623 7962 8316 8712 9289 10164 10616 11088 11943 13068 13552 14597 15246 15924 16632 17424 18578 20328 21232 22869 23886 26136 27867 29194 30492 31848 33264 35829 37156 40656 43791 45738 47772 52272 55734 58388 60984 63696 71658 74312 83601 87582 91476 95544 102179 111468 116776 121968 131373 143316 148624 160567 167202 175164 182952 191088 204358 222936 233552 250803 262746 286632 306537 321134 334404 350328 365904 394119 408716 445872 481701 501606 525492 573264 613074 642268 668808 700656 788238 817432 919611 963402 1003212 1050984 1123969 1226148 1284536 1337616 1445103 1576476 1634864 1760929 1839222 1926804 2006424 2101968 2247938 2452296 2569072 2758833 2890206 3152952 3371907 3521858 3678444 3853608 4012848 4335309 4495876 4904592 5282787 5517666 5780412 6305904 6743814 7043716 7356888 7707216 8670618 8991752 10115721 10565574 11035332 11560824 12326503 13487628 14087432 14713776 15848361 17341236 17983504 19370219 20231442 21131148 22070664 23121648 24653006 26975256 28174864 30347163 31696722 34682472 36979509 38740438 40462884 42262296 44141328 47545083 49306012 53950512 58110657 60694326 63393444 69364944 73959018 77480876 80925768 84524592 95090166 98612024 110938527 116221314 121388652 126786888 135591533 147918036 154961752 161851536 174331971 190180332 197224048 213072409 221877054 232442628 242777304 253573776 271183066 295836072 309923504 332815581 348663942 380360664 406774599 426144818 443754108 464885256 485554608 522995913 542366132 591672144 639217227 665631162 697327884 760721328 813549198 852289636 887508216 929770512 1045991826 1084732264 1220323797 1278434454 1331262324 1394655768 1491506863 1627098396 1704579272 1775016432 1917651681 2091983652 2169464528 2440647594 2556868908 2662524648 2789311536 2983013726 3254196792 3409158544 3660971391 3835303362 4183967304 4474520589 4881295188 5113737816 5325049296 5752955043 5966027452 6508393584 7321942782 7670606724 8367934608 8949041178 9762590376 10227475632 11505910086 11932054904 13423561767 14643885564 15341213448 17898082356 19525180752 23011820172 23864109808 26847123534 29287771128 30682426896 35796164712 40270685301 46023640344 53694247068 58575542256 71592329424 80541370602 92047280688 107388494136 161082741204 214776988272 322165482408 644330964816
• Sum of all divisors σ(n): 2325051395520
• Sum of proper divisors (its aliquot sum) s(n): 1680720430704
• 644330964816 is an abundant number, because the sum of its proper divisors (1680720430704) is greater than itself. Its abundance is 1036389465888

Bases of 644330964816

• Binary: 1001011000000101000111100100011101010000₂
• Hexadecimal: 0x96051E4750
• Base-36: 88020QC0

Squares and roots of 644330964816

• 644330964816 squared (644330964816²) is 415162392220717429913856
• 644330964816 cubed (644330964816³) is 267501984734893474440102696246890496
• The square root of 644330964816 is 802702.2890312447
• The cube root of 644330964816 is 8637.1342019417

Scales and comparisons

• 644,330,964,816 seconds is equal to 20,487 years, 38 weeks, 7 hours, 33 minutes, 36 seconds.
• To count from 1 to 644,330,964,816 would take you about forty thousand, nine hundred seventy-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 644330964816 cubic inches would be around 719.8 feet tall.

Recreational maths with 644330964816

• 644330964816 backwards is 618469033446
• 644330964816 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 644330964816's digits is 54
• More coming soon!