640462508879955

Names of 640462508879955

• Cardinal: 640462508879955 can be written as Six hundred forty trillion, four hundred sixty-two billion, five hundred eight million, eight hundred seventy-nine thousand, nine hundred fifty-five.

Scientific notation

• Scientific notation: 6.40462508879955 × 10¹⁴

Factors of 640462508879955

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 393852

Divisors of 640462508879955

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 15 19 57 95 103 285 309 515 1545 1957 5871 9785 29355 66721 200163 327001 333605 981003 1000815 1267699 1635005 3803097 4905015 6213019 6338495 6872263 18639057 19015485 20616789 31065095 33681103 34361315 93195285 101043309 103083945 130572997 168405515 391718991 505216545 639940957 652864985 1919822871 1958594955 3199704785 9599114355 21817833721 65453501163 109089168605 327267505815 414538840699 1243616522097 2072694203495 2247236873263 6218082610485 6741710619789 11236184366315 33708553098945 42697500591997 128092501775991 213487502959985 640462508879955
• Sum of all divisors σ(n): 1089165914004480
• Sum of proper divisors (its aliquot sum) s(n): 448703405124525
• 640462508879955 is a deficient number, because the sum of its proper divisors (448703405124525) is less than itself. Its deficiency is 191759103755430

Bases of 640462508879955

• Binary: 10010001100111111101001100010101010111000001010011₂
• Hexadecimal: 0x2467F4C557053
• Base-36: 6B0WEXJ9LF

Squares and roots of 640462508879955

• 640462508879955 squared (640462508879955²) is 410192225280806437228600802025
• 640462508879955 cubed (640462508879955³) is 262712741726396994646946267467236397445908875
• The square root of 640462508879955 is 25307360.7648042785
• The cube root of 640462508879955 is 86198.1418770675

Scales and comparisons

• 640,462,508,879,955 seconds is equal to 20,364,726 years, 36 weeks, 3 days, 10 hours, 39 minutes, 15 seconds.
• To count from 1 to 640,462,508,879,955 would take you about fifty million, nine hundred eleven thousand, eight hundred sixteen 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 640462508879955 cubic inches would be around 7183.2 feet tall.

Recreational maths with 640462508879955

• 640462508879955 backwards is 559978805264046
• The number of decimal digits it has is: 15
• The sum of 640462508879955's digits is 78
• More coming soon!