21009741468806880

Names of 21009741468806880

• Cardinal: 21009741468806880 can be written as Twenty-one quadrillion, nine trillion, seven hundred forty-one billion, four hundred sixty-eight million, eight hundred six thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.100974146880688 × 10¹⁶

Factors of 21009741468806880

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 14590098242237

Divisors of 21009741468806880

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 90 96 120 144 160 180 240 288 360 480 720 1440 14590098242227 29180196484454 43770294726681 58360392968908 72950491211135 87540589453362 116720785937816 131310884180043 145900982422270 175081178906724 218851473633405 233441571875632 262621768360086 291801964844540 350162357813448 437702947266810 466883143751264 525243536720172 583603929689080 656554420900215 700324715626896 875405894533620 1050487073440344 1167207859378160 1313108841800430 1400649431253792 1750811789067240 2100974146880688 2334415718756320 2626217683600860 3501623578134480 4201948293761376 5252435367201720 7003247156268960 10504870734403440 21009741468806880
• Sum of all divisors σ(n): 71695742762308392
• Sum of proper divisors (its aliquot sum) s(n): 50686001293501512
• 21009741468806880 is an abundant number, because the sum of its proper divisors (50686001293501512) is greater than itself. Its abundance is 29676259824694632

Bases of 21009741468806880

• Binary: 1001010101001000011111110100001000100100010111011100000₂
• Hexadecimal: 0x4AA43FA1122EE0
• Base-36: 5QVBXZJ2T40

Squares and roots of 21009741468806880

• 21009741468806880 squared (21009741468806880²) is 441409236586103475416050735334400
• 21009741468806880 cubed (21009741468806880³) is 9273893942617445224804114859190739544225820672000
• The square root of 21009741468806880 is 144947374.8255099651
• The cube root of 21009741468806880 is 275935.0713192835

Scales and comparisons

• 21,009,741,468,806,880 seconds is equal to 668,044,791 years, 16 weeks, 1 day, 2 hours, 48 minutes.
• To count from 1 to 21,009,741,468,806,880 would take you about two billion, four million, one hundred thirty-four thousand, three 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 21009741468806880 cubic inches would be around 22994.6 feet tall.

Recreational maths with 21009741468806880

• 21009741468806880 backwards is 08860886414790012
• 21009741468806880 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21009741468806880's digits is 72
• More coming soon!