645799643369464320

Names of 645799643369464320

• Cardinal: 645799643369464320 can be written as Six hundred forty-five quadrillion, seven hundred ninety-nine trillion, six hundred forty-three billion, three hundred sixty-nine million, four hundred sixty-four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 6.4579964336946432 × 10¹⁷

Factors of 645799643369464320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 283126246588

Divisors of 645799643369464320

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 64 66 72 80 81 88 90 96 99 108 110 120 128 132 135 144 160 162 165 176 180 192 198 216 220 240 256 264 270 288 297 320 324 330 352 360 384 396 405 432 440 480 495 512 528 540 576 594 640 648 660 704 720 768 792 810 864 880 891 960 990 1056 1080 1152 1188 1280 1296 1320 1408 1440 1485 1536 1584 1620 1728 1760 1782 1920 1980 2112 2160 2304 2376 2560 2592 2640 2816 2880 2970 3168 3240 3456 3520 3564 3840 3960 4224 4320 4455 4608 4752 5184 5280 5632 5760 5940 6336 6480 6912 7040 7128 7680 7920 8448 8640 8910 9504 10368 10560 11520 11880 12672 12960 13824 14080 14256 15840 16896 17280 17820 19008 20736 21120 23040 23760 25344 25920 28160 28512 31680 34560 35640 38016 41472 42240 47520 50688 51840 57024 63360 69120 71280 76032 84480 95040 103680 114048 126720 142560 152064 190080 207360 228096 253440 285120 380160 456192 570240 760320 1140480 2280960 283126246567 566252493134 849378739701 1132504986268 1415631232835 1698757479402 2265009972536 2548136219103 2831262465670 3114388712237 3397514958804 4246893698505 4530019945072 5096272438206 5662524931340 6228777424474 6795029917608 7644408657309 8493787397010 9060039890144 9343166136711 10192544876412 11325049862680 12457554848948 12740681095515 13590059835216 15288817314618 15571943561185 16987574794020 18120079780288 18686332273422 20385089752824 22650099725360 22933225971927 24915109697896 25481362191030 27180119670432 28029498410133 30577634629236 31143887122370 33975149588040 36240159560576 37372664546844 38222043286545 40770179505648 45300199450720 45866451943854 46715830683555 49830219395792 50962724382060 54360239340864 56058996820266 61155269258472 62287774244740 67950299176080 72480319121152 74745329093688 76444086573090 81540359011296 84088495230399 90600398901440 91732903887708 93431661367110 99660438791584 101925448764120 108720478681728 112117993640532 114666129859635 122310538516944 124575548489480 135900598352160 140147492050665 144960638242304 149490658187376 152888173146180 163080718022592 168176990460798 181200797802880 183465807775416 186863322734220 199320877583168 203850897528240 217440957363456 224235987281064 229332259719270 244621077033888 249151096978960 252265485691197 271801196704320 280294984101330 298981316374752 305776346292360 326161436045184 336353980921596 362401595605760 366931615550832 373726645468440 398641755166336 407701795056480 420442476151995 434881914726912 448471974562128 458664519438540 489242154067776 498302193957920 504530971382394 543602393408640 560589968202660 597962632749504 611552692584720 652322872090368 672707961843192 724803191211520 733863231101664 747453290936880 797283510332672 815403590112960 840884952303990 896943949124256 917329038877080 978484308135552 996604387915840 1009061942764788 1087204786817280 1121179936405320 1195925265499008 1223105385169440 1261327428455985 1304645744180736 1345415923686384 1467726462203328 1494906581873760 1594567020665344 1630807180225920 1681769904607980 1793887898248512 1834658077754160 1956968616271104 1993208775831680 2018123885529576 2174409573634560 2242359872810640 2391850530998016 2446210770338880 2522654856911970 2690831847372768 2935452924406656 2989813163747520 3261614360451840 3363539809215960 3587775796497024 3669316155508320 3913937232542208 3986417551663360 4036247771059152 4484719745621280 4783701061996032 4892421540677760 5045309713823940 5381663694745536 5870905848813312 5979626327495040 6523228720903680 6727079618431920 7175551592994048 7338632311016640 7972835103326720 8072495542118304 8969439491242560 9784843081355520 10090619427647880 10763327389491072 11741811697626624 11959252654990080 13454159236863840 14351103185988096 14677264622033280 16144991084236608 17938878982485120 19569686162711040 20181238855295760 21526654778982144 23918505309980160 26908318473727680 29354529244066560 32289982168473216 35877757964970240 40362477710591520 43053309557964288 53816636947455360 58709058488133120 64579964336946432 71755515929940480 80724955421183040 107633273894910720 129159928673892864 161449910842366080 215266547789821440 322899821684732160 645799643369464320
• Sum of all divisors σ(n): 2523327564882725568
• Sum of proper divisors (its aliquot sum) s(n): 1877527921513261248
• 645799643369464320 is an abundant number, because the sum of its proper divisors (1877527921513261248) is greater than itself. Its abundance is 1231728278143796928

Bases of 645799643369464320

• Binary: 100011110110010101110101101010100011000111000110001000000000₂
• Hexadecimal: 0x8F6575AA31C6200
• Base-36: 4WMSV8I1I800

Squares and roots of 645799643369464320

• 645799643369464320 squared (645799643369464320²) is 417057179376127301050979403753062400
• 645799643369464320 cubed (645799643369464320³) is 269335377705777720920594921260315948818353847533568000
• The square root of 645799643369464320 is 803616602.2236376869
• The cube root of 645799643369464320 is 864369.1674478531

Scales and comparisons

• 645,799,643,369,464,320 seconds is equal to 20,534,431,069 years, 36 weeks, 19 hours, 12 minutes.
• To count from 1 to 645,799,643,369,464,320 would take you about sixty-one billion, six hundred three million, two hundred ninety-three thousand, two hundred nine 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 645799643369464320 cubic inches would be around 72030.8 feet tall.

Recreational maths with 645799643369464320

• 645799643369464320 backwards is 023464963346997546
• 645799643369464320 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 645799643369464320's digits is 90
• More coming soon!