640465865000

Names of 640465865000

• Cardinal: 640465865000 can be written as Six hundred forty billion, four hundred sixty-five million, eight hundred sixty-five thousand.

Scientific notation

• Scientific notation: 6.40465865 × 10¹¹

Factors of 640465865000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 136

Divisors of 640465865000

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 4 5 8 10 13 20 25 26 40 43 50 52 65 73 86 100 104 125 130 146 172 200 215 250 260 292 325 344 365 430 500 520 559 584 625 650 730 860 949 1000 1075 1118 1250 1300 1460 1625 1720 1825 1849 1898 2150 2236 2500 2600 2795 2920 3139 3250 3650 3698 3796 4300 4472 4745 5000 5329 5375 5590 6278 6500 7300 7396 7592 8125 8600 9125 9245 9490 10658 10750 11180 12556 13000 13975 14600 14792 15695 16250 18250 18490 18980 21316 21500 22360 23725 24037 25112 26645 26875 27950 31390 32500 36500 36980 37960 40807 42632 43000 45625 46225 47450 48074 53290 53750 55900 62780 65000 69277 69875 73000 73960 78475 81614 91250 92450 94900 96148 106580 107500 111800 118625 120185 125560 133225 134977 138554 139750 156950 163228 182500 184900 189800 192296 204035 213160 215000 229147 231125 237250 240370 266450 269954 277108 279500 313900 326456 346385 349375 365000 369800 392375 408070 458294 462250 474500 480740 532900 539908 554216 559000 593125 600925 627800 666125 674885 692770 698750 784750 816140 916588 924500 949000 961480 1020175 1065800 1079816 1145735 1155625 1186250 1201850 1332250 1349770 1385540 1397500 1569500 1632280 1731925 1754701 1833176 1849000 1961875 2040350 2291470 2311250 2372500 2403700 2664500 2699540 2771080 2795000 2978911 3004625 3139000 3330625 3374425 3463850 3509402 3923750 4080700 4582940 4622500 4745000 4807400 5100875 5329000 5399080 5728675 5957822 6009250 6661250 6748850 6927700 7018804 7847500 8161400 8659625 8773505 9165880 9245000 9853321 10201750 11457350 11915644 12018500 13322500 13497700 13855400 14037608 14894555 15023125 15695000 16872125 17319250 17547010 19706642 20403500 22914700 23831288 24037000 25504375 26645000 26995400 28643375 29789110 30046250 33744250 34638500 35094020 39413284 40807000 43298125 43867525 45829400 49266605 51008750 57286750 59578220 60092500 67488500 69277000 70188040 74472775 78826568 84360625 86596250 87735050 98533210 102017500 114573500 119156440 120185000 128093173 134977000 143216875 148945550 168721250 173192500 175470100 197066420 204035000 219337625 229147000 246333025 256186346 286433750 297891100 337442500 346385000 350940200 372363875 394132840 438675250 492666050 512372692 572867500 595782200 640465865 674885000 744727750 877350500 985332100 1024745384 1096688125 1145735000 1231665125 1280931730 1489455500 1754701000 1861819375 1970664200 2193376250 2463330250 2561863460 2978911000 3202329325 3723638750 4386752500 4926660500 5123726920 6158325625 6404658650 7447277500 8773505000 9853321000 12316651250 12809317300 14894555000 16011646625 24633302500 25618634600 32023293250 49266605000 64046586500 80058233125 128093173000 160116466250 320232932500 640465865000
• Sum of all divisors σ(n): 1677474434790
• Sum of proper divisors (its aliquot sum) s(n): 1037008569790
• 640465865000 is an abundant number, because the sum of its proper divisors (1037008569790) is greater than itself. Its abundance is 396542704790

Bases of 640465865000

• Binary: 1001010100011110101111011000100100101000₂
• Hexadecimal: 0x951EBD8928
• Base-36: 8684U888

Squares and roots of 640465865000

• 640465865000 squared (640465865000²) is 410196524230198225000000
• 640465865000 cubed (640465865000³) is 262716871711087365296089625000000000
• The square root of 640465865000 is 800291.1126583875
• The cube root of 640465865000 is 8619.8292440555

Scales and comparisons

• 640,465,865,000 seconds is equal to 20,364 years, 43 weeks, 2 days, 8 hours, 43 minutes, 20 seconds.
• To count from 1 to 640,465,865,000 would take you about forty thousand, seven hundred twenty-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 640465865000 cubic inches would be around 718.3 feet tall.

Recreational maths with 640465865000

• 640465865000 backwards is 000568564046
• The number of decimal digits it has is: 12
• The sum of 640465865000's digits is 44
• More coming soon!