138978952845819905

Names of 138978952845819905

• Cardinal: 138978952845819905 can be written as One hundred thirty-eight quadrillion, nine hundred seventy-eight trillion, nine hundred fifty-two billion, eight hundred forty-five million, eight hundred nineteen thousand, nine hundred five.

Scientific notation

• Scientific notation: 1.38978952845819905 × 10¹⁷

Factors of 138978952845819905

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 132995

Divisors of 138978952845819905

• Number of divisors d(n): 192
• Complete list of divisors:
  1 5 7 13 35 65 91 169 331 455 613 845 883 1183 1655 2317 3065 4291 4303 4415 5915 6181 7969 11479 11585 21455 21515 30121 30905 39845 55783 55939 57395 80353 103597 131143 149227 150605 202903 278915 279695 292273 391573 401765 517985 541279 655715 725179 746135 918001 1014515 1044589 1420321 1461365 1704859 1957865 2045911 2637739 2706395 3625895 3788953 3799549 4590005 5222945 7036627 7101605 8524295 10229555 11934013 13188695 18464173 18944765 18997745 22163167 26596843 34290607 35183135 43408333 49256389 49394137 59670065 80390659 91476151 92320865 110815835 115799269 132984215 155142169 171453035 179163349 217041665 240034249 246281945 246970685 303858331 345758959 401953295 457380755 562734613 564308329 578996345 640333057 775710845 810594883 895816745 1045078567 1200171245 1254143443 1505390497 1519291655 1728794795 2329123537 2813673065 2821541645 3201665285 3950158303 4052974415 5225392835 6270717215 7315549969 7336008277 7526952485 10537733479 11645617685 13586021371 16303864759 19570076461 19750791515 26609308129 30278605981 36577749845 36680041385 38329558039 51352057939 52688667395 67930106855 70984951897 81519323795 95102149597 97850382305 133046540645 136990535227 151393029905 186265156903 191647790195 211950241867 256760289695 268306906273 345921005677 354924759485 475510747985 496894663279 498284254507 684952676135 922804374661 931325784515 1059751209335 1341534531365 1729605028385 2421447039739 2484473316395 2491421272535 3487989781549 4496973073801 4614021873305 6459630622627 6477695308591 11996456870593 12107235198695 17439948907745 22484865369005 23496019077907 31478811516607 32298153113135 32388476542955 45343867160137 59982284352965 83975198094151 117480095389535 157394057583035 164472133545349 226719335800685 305448248012791 419875990470755 822360667726745 1527241240063955 2138137736089537 3970827224166283 10690688680447685 19854136120831415 27795790569163981 138978952845819905
• Sum of all divisors σ(n): 207586675072438272
• Sum of proper divisors (its aliquot sum) s(n): 68607722226618367
• 138978952845819905 is a deficient number, because the sum of its proper divisors (68607722226618367) is less than itself. Its deficiency is 70371230619201538

Bases of 138978952845819905

• Binary: 111101101110000001001111100001011101000011000000000000001₂
• Hexadecimal: 0x1EDC09F0BA18001
• Base-36: 120FXDJ66B5T

Squares and roots of 138978952845819905

• 138978952845819905 squared (138978952845819905²) is 19315149334120632670690431694209025
• 138978952845819905 cubed (138978952845819905³) is 2684399228516721144996244097352031983446666575642625
• The square root of 138978952845819905 is 372798810.1453918335
• The cube root of 138978952845819905 is 517984.0000000011

Scales and comparisons

• 138,978,952,845,819,905 seconds is equal to 4,419,100,810 years, 19 weeks, 1 day, 18 hours, 25 minutes, 5 seconds.
• To count from 1 to 138,978,952,845,819,905 would take you about thirteen billion, two hundred fifty-seven million, three hundred two thousand, four hundred thirty-one 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 138978952845819905 cubic inches would be around 43165.3 feet tall.

Recreational maths with 138978952845819905

• 138978952845819905 backwards is 509918548259879831
• The number of decimal digits it has is: 18
• The sum of 138978952845819905's digits is 101
• More coming soon!