138778812497120656

Names of 138778812497120656

• Cardinal: 138778812497120656 can be written as One hundred thirty-eight quadrillion, seven hundred seventy-eight trillion, eight hundred twelve billion, four hundred ninety-seven million, one hundred twenty thousand, six hundred fifty-six.

Scientific notation

• Scientific notation: 1.38778812497120656 × 10¹⁷

Factors of 138778812497120656

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 13304662

Divisors of 138778812497120656

• Number of divisors d(n): 45
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 98 112 196 392 784 13304653 26609306 53218612 93132571 106437224 186265142 212874448 372530284 651927997 745060568 1303855994 1490121136 2607711988 5215423976 10430847952 177013791450409 354027582900818 708055165801636 1239096540152863 1416110331603272 2478193080305726 2832220663206544 4956386160611452 8673675781070041 9912772321222904 17347351562140082 19825544642445808 34694703124280164 69389406248560328 138778812497120656
• Sum of all divisors σ(n): 312783393002196321
• Sum of proper divisors (its aliquot sum) s(n): 174004580505075665
• 138778812497120656 is an abundant number, because the sum of its proper divisors (174004580505075665) is greater than itself. Its abundance is 35225768007955009

Bases of 138778812497120656

• Binary: 111101101000010101001100000111101001111011100110110010000₂
• Hexadecimal: 0x1ED0A983D3DCD90
• Base-36: 11YGZEBQ13F4

Squares and roots of 138778812497120656

• 138778812497120656 squared (138778812497120656²) is 19259558798110972367810290621870336
• 138778812497120656 cubed (138778812497120656³) is 2672818699220313093357037318161631405615661379260416
• 138778812497120656 is a perfect square number. Its square root is 372530284
• The cube root of 138778812497120656 is 517735.2349889023

Scales and comparisons

• 138,778,812,497,120,656 seconds is equal to 4,412,736,966 years, 18 weeks, 3 days, 17 hours, 4 minutes, 16 seconds.
• To count from 1 to 138,778,812,497,120,656 would take you about thirteen billion, two hundred thirty-eight million, two hundred ten thousand, eight hundred ninety-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 138778812497120656 cubic inches would be around 43144.6 feet tall.

Recreational maths with 138778812497120656

• 138778812497120656 backwards is 656021794218877831
• The number of decimal digits it has is: 18
• The sum of 138778812497120656's digits is 85
• More coming soon!