21267977499377981

Names of 21267977499377981

• Cardinal: 21267977499377981 can be written as Twenty-one quadrillion, two hundred sixty-seven trillion, nine hundred seventy-seven billion, four hundred ninety-nine million, three hundred seventy-seven thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 2.1267977499377981 × 10¹⁶

Factors of 21267977499377981

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1062

Divisors of 21267977499377981

• Number of divisors d(n): 16
• Complete list of divisors:
  1 461 601 212521 277061 361201 97972181 127725121 166513661 217081801 58881280781 76762797721 100074710261 35387649749381 46134441430321 21267977499377981
• Sum of all divisors σ(n): 21349735919491056
• Sum of proper divisors (its aliquot sum) s(n): 81758420113075
• 21267977499377981 is a deficient number, because the sum of its proper divisors (81758420113075) is less than itself. Its deficiency is 21186219079264906

Bases of 21267977499377981

• Binary: 1001011100011110001110011100011111100010000000100111101₂
• Hexadecimal: 0x4B8F1CE3F1013D
• Base-36: 5TEV9ZC81FH

Squares and roots of 21267977499377981

• 21267977499377981 squared (21267977499377981²) is 452326866914048077807241907636361
• 21267977499377981 cubed (21267977499377981³) is 9620077627892113047291660957357621125731438367141
• The square root of 21267977499377981 is 145835446.6492216733
• 21267977499377981 is a perfect cube number. Its cube root is 277061

Scales and comparisons

• 21,267,977,499,377,981 seconds is equal to 676,255,898 years, 15 weeks, 6 days, 12 hours, 59 minutes, 41 seconds.
• To count from 1 to 21,267,977,499,377,981 would take you about two billion, twenty-eight million, seven hundred sixty-seven thousand, six hundred ninety-four 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 21267977499377981 cubic inches would be around 23088.4 feet tall.

Recreational maths with 21267977499377981

• 21267977499377981 backwards is 18977399477976212
• The number of decimal digits it has is: 17
• The sum of 21267977499377981's digits is 98
• More coming soon!