640986686792265600

Names of 640986686792265600

• Cardinal: 640986686792265600 can be written as Six hundred forty quadrillion, nine hundred eighty-six trillion, six hundred eighty-six billion, seven hundred ninety-two million, two hundred sixty-five thousand, six hundred.

Scientific notation

• Scientific notation: 6.409866867922656 × 10¹⁷

Factors of 640986686792265600

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1508203220

Divisors of 640986686792265600

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 75 80 90 96 100 108 120 128 135 144 150 160 180 192 200 216 225 240 270 288 300 320 360 384 400 432 450 480 540 576 600 640 675 720 800 864 900 960 1080 1152 1200 1350 1440 1600 1728 1800 1920 2160 2400 2700 2880 3200 3456 3600 4320 4800 4919 5400 5760 7200 8640 9600 9838 10800 14400 14757 17280 19676 21600 24595 28800 29514 39352 43200 44271 49190 59028 73785 78704 86400 88542 98380 118056 122975 132813 147570 157408 177084 196760 221355 236112 245950 265626 295140 314816 354168 368925 393520 442710 472224 491900 531252 590280 629632 664065 708336 737850 787040 885420 944448 983800 1062504 1106775 1180560 1328130 1416672 1475700 1574080 1770840 1888896 1967600 2125008 2213550 2361120 2656260 2833344 2951400 3148160 3320325 3541680 3935200 4250016 4427100 4722240 5312520 5666688 5902800 6640650 7083360 7870400 8500032 8854200 9444480 10625040 11805600 13281300 14166720 15740800 17000064 17708400 21250080 23611200 26562600 28333440 35416800 42500160 47222400 53125200 70833600 85000320 106250400 141667200 212500800 425001600 1508198291 3016396582 4524594873 6032793164 7540991455 9049189746 12065586328 13573784619 15081982910 18098379492 22622974365 24131172656 27147569238 30163965820 36196758984 37704957275 40721353857 45245948730 48262345312 54295138476 60327931640 67868923095 72393517968 75409914550 81442707714 90491897460 96524690624 108590276952 113114871825 120655863280 135737846190 144787035936 150819829100 162885415428 180983794920 193049381248 203606769285 217180553904 226229743650 241311726560 271475692380 289574071872 301639658200 325770830856 339344615475 361967589840 407213538570 434361107808 452459487300 482623453120 542951384760 579148143744 603279316400 651541661712 678689230950 723935179680 814427077140 868722215616 904918974600 965246906240 1018033846425 1085902769520 1206558632800 1303083323424 1357378461900 1447870359360 1628854154280 1737444431232 1809837949200 2036067692850 2171805539040 2413117265600 2606166646848 2714756923800 2895740718720 3257708308560 3619675898400 4072135385700 4343611078080 4826234531200 5212333293696 5429513847600 6515416617120 7239351796800 7418827393429 8144270771400 8687222156160 10859027695200 13030833234240 14478703593600 14837654786858 16288541542800 21718055390400 22256482180287 26061666468480 29675309573716 32577083085600 37094136967145 43436110780800 44512964360574 59350619147432 65154166171200 66769446540861 74188273934290 89025928721148 111282410901435 118701238294864 130308332342400 133538893081722 148376547868580 178051857442296 185470684835725 200308339622583 222564821802870 237402476589728 267077786163444 296753095737160 333847232704305 356103714884592 370941369671450 400616679245166 445129643605740 474804953179456 534155572326888 556412054507175 593506191474320 667694465408610 712207429769184 741882739342900 801233358490332 890259287211480 949609906358912 1001541698112915 1068311144653776 1112824109014350 1187012382948640 1335388930817220 1424414859538368 1483765478685800 1602466716980664 1669236163521525 1780518574422960 2003083396225830 2136622289307552 2225648218028700 2374024765897280 2670777861634440 2848829719076736 2967530957371600 3204933433961328 3338472327043050 3561037148845920 4006166792451660 4273244578615104 4451296436057400 4748049531794560 5007708490564575 5341555723268880 5935061914743200 6409866867922656 6676944654086100 7122074297691840 8012333584903320 8546489157230208 8902592872114800 10015416981129150 10683111446537760 11870123829486400 12819733735845312 13353889308172200 14244148595383680 16024667169806640 17805185744229600 20030833962258300 21366222893075520 23740247658972800 25639467471690624 26707778616344400 32049334339613280 35610371488459200 40061667924516600 42732445786151040 53415557232688800 64098668679226560 71220742976918400 80123335849033200 106831114465377600 128197337358453120 160246671698066400 213662228930755200 320493343396132800 640986686792265600
• Sum of all divisors σ(n): 2346310115657568000
• Sum of proper divisors (its aliquot sum) s(n): 1705323428865302400
• 640986686792265600 is an abundant number, because the sum of its proper divisors (1705323428865302400) is greater than itself. Its abundance is 1064336742073036800

Bases of 640986686792265600

• Binary: 100011100101001111011111111011011100000000011110111110000000₂
• Hexadecimal: 0x8E53DFEDC01EF80
• Base-36: 4VBETERUAQO0

Squares and roots of 640986686792265600

• 640986686792265600 squared (640986686792265600²) is 410863932644925999379287980943360000
• 640986686792265600 cubed (640986686792265600³) is 263358310908511691172659743798346699899839676416000000
• The square root of 640986686792265600 is 800616441.7449004647
• The cube root of 640986686792265600 is 862216.5136722131

Scales and comparisons

• 640,986,686,792,265,600 seconds is equal to 20,381,393,937 years, 51 weeks, 4 days.
• To count from 1 to 640,986,686,792,265,600 would take you about sixty-one billion, one hundred forty-four million, one hundred eighty-one thousand, eight hundred thirteen 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 640986686792265600 cubic inches would be around 71851.4 feet tall.

Recreational maths with 640986686792265600

• 640986686792265600 backwards is 006562297686689046
• 640986686792265600 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 640986686792265600's digits is 90
• More coming soon!