640026488145683808

Names of 640026488145683808

• Cardinal: 640026488145683808 can be written as Six hundred forty quadrillion, twenty-six trillion, four hundred eighty-eight billion, one hundred forty-five million, six hundred eighty-three thousand, eight hundred eight.

Scientific notation

• Scientific notation: 6.40026488145683808 × 10¹⁷

Factors of 640026488145683808

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 170947245765425

Divisors of 640026488145683808

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 72 78 96 104 117 144 156 208 234 288 312 416 468 624 936 1248 1872 3744 170947245765407 341894491530814 512841737296221 683788983061628 1025683474592442 1367577966123256 1538525211888663 2051366949184884 2222314194950291 2735155932246512 3077050423777326 4102733898369768 4444628389900582 5470311864493024 6154100847554652 6666942584850873 8205467796739536 8889256779801164 12308201695109304 13333885169701746 16410935593479072 17778513559602328 20000827754552619 24616403390218608 26667770339403492 35557027119204656 40001655509105238 49232806780437216 53335540678806984 71114054238409312 80003311018210476 106671081357613968 160006622036420952 213342162715227936 320013244072841904 640026488145683808
• Sum of all divisors σ(n): 1960081119946168128
• Sum of proper divisors (its aliquot sum) s(n): 1320054631800484320
• 640026488145683808 is an abundant number, because the sum of its proper divisors (1320054631800484320) is greater than itself. Its abundance is 680028143654800512

Bases of 640026488145683808

• Binary: 100011100001110101001011001100110000110000111010010101100000₂
• Hexadecimal: 0x8E1D4B330C3A560
• Base-36: 4V1YGDLRPUG0

Squares and roots of 640026488145683808

• 640026488145683808 squared (640026488145683808²) is 409633905528097136006636379913380864
• 640026488145683808 cubed (640026488145683808³) is 262176549980548822524431268696335599689441666421850112
• The square root of 640026488145683808 is 800016554.9197615249
• The cube root of 640026488145683808 is 861785.7648028917

Scales and comparisons

• 640,026,488,145,683,808 seconds is equal to 20,350,862,591 years, 6 weeks, 1 day, 15 hours, 16 minutes, 48 seconds.
• To count from 1 to 640,026,488,145,683,808 would take you about sixty-one billion, fifty-two million, five hundred eighty-seven thousand, seven hundred seventy-three 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 640026488145683808 cubic inches would be around 71815.5 feet tall.

Recreational maths with 640026488145683808

• 640026488145683808 backwards is 808386541884620046
• The number of decimal digits it has is: 18
• The sum of 640026488145683808's digits is 81
• More coming soon!