127894731846312421808

Names of 127894731846312421808

• Cardinal: 127894731846312421808 can be written as One hundred twenty-seven quintillion, eight hundred ninety-four quadrillion, seven hundred thirty-one trillion, eight hundred forty-six billion, three hundred twelve million, four hundred twenty-one thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.27894731846312421808 × 10²⁰

Factors of 127894731846312421808

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 7068159566

Divisors of 127894731846312421808

• Number of divisors d(n): 20
• Complete list of divisors:
  1 2 4 8 16 1413631913 2827263826 5654527651 5654527652 11309055302 11309055304 22618110604 22618110608 45236221208 90472442416 7993420740394526363 15986841480789052726 31973682961578105452 63947365923156210904 127894731846312421808
• Sum of all divisors σ(n): 247796043171343263768
• Sum of proper divisors (its aliquot sum) s(n): 119901311325030841960
• 127894731846312421808 is a deficient number, because the sum of its proper divisors (119901311325030841960) is less than itself. Its deficiency is 7993420521281579848

Bases of 127894731846312421808

• Binary: 1101110111011100101010111001111111110110111010010100110100110110000₂
• Hexadecimal: 0x6EEE55CFFB74A69B0
• Base-36: QZOMQOTITW2I8

Squares and roots of 127894731846312421808

• 127894731846312421808 squared (127894731846312421808²) is 16357062434040160774430102602522113988864
• 127894731846312421808 cubed (127894731846312421808³) is 2091982113794956727659677373593590624715512174375326982746112
• The square root of 127894731846312421808 is 11309055302.9999999989
• The cube root of 127894731846312421808 is 5038302.2627268975

Scales and comparisons

• 127,894,731,846,312,421,808 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 127,894,731,846,312,421,808 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and 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 127894731846312421808 cubic inches would be around 419858.5 feet tall.

Recreational maths with 127894731846312421808

• 127894731846312421808 backwards is 808124213648137498721
• The number of decimal digits it has is: 21
• The sum of 127894731846312421808's digits is 89
• More coming soon!