21004497015263999

Names of 21004497015263999

• Cardinal: 21004497015263999 can be written as Twenty-one quadrillion, four trillion, four hundred ninety-seven billion, fifteen million, two hundred sixty-three thousand, nine hundred ninety-nine.

Scientific notation

• Scientific notation: 2.1004497015263999 × 10¹⁶

Factors of 21004497015263999

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 91732045

Divisors of 21004497015263999

• Number of divisors d(n): 8
• Complete list of divisors:
  1 1571 145987 91584487 229345577 143879229077 13370144503669 21004497015263999
• Sum of all divisors σ(n): 21018011360074368
• Sum of proper divisors (its aliquot sum) s(n): 13514344810369
• 21004497015263999 is a deficient number, because the sum of its proper divisors (13514344810369) is less than itself. Its deficiency is 20990982670453630

Bases of 21004497015263999

• Binary: 1001010100111110111101010001111010001111101001011111111₂
• Hexadecimal: 0x4A9F7A8F47D2FF
• Base-36: 5QTH0PUUGVZ

Squares and roots of 21004497015263999

• 21004497015263999 squared (21004497015263999²) is 441188894864234242639995665472001
• 21004497015263999 cubed (21004497015263999³) is 9266950825343430406847837650842299786265957791999
• The square root of 21004497015263999 is 144929282.8080785025
• The cube root of 21004497015263999 is 275912.1097629021

Scales and comparisons

• 21,004,497,015,263,999 seconds is equal to 667,878,033 years, 47 weeks, 2 days, 7 hours, 59 minutes, 59 seconds.
• To count from 1 to 21,004,497,015,263,999 would take you about two billion, three million, six hundred thirty-four thousand, one hundred 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 21004497015263999 cubic inches would be around 22992.7 feet tall.

Recreational maths with 21004497015263999

• 21004497015263999 backwards is 99936251079440012
• The number of decimal digits it has is: 17
• The sum of 21004497015263999's digits is 71
• More coming soon!