21067816699495440

Names of 21067816699495440

• Cardinal: 21067816699495440 can be written as Twenty-one quadrillion, sixty-seven trillion, eight hundred sixteen billion, six hundred ninety-nine million, four hundred ninety-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.106781669949544 × 10¹⁶

Factors of 21067816699495440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1393374120354

Divisors of 21067816699495440

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 35 36 40 42 45 48 54 56 60 63 70 72 80 84 90 105 108 112 120 126 135 140 144 168 180 189 210 216 240 252 270 280 315 336 360 378 420 432 504 540 560 630 720 756 840 945 1008 1080 1260 1512 1680 1890 2160 2520 3024 3780 5040 7560 15120 1393374120337 2786748240674 4180122361011 5573496481348 6966870601685 8360244722022 9753618842359 11146992962696 12540367083033 13933741203370 16720489444044 19507237684718 20900611805055 22293985925392 25080734166066 27867482406740 29260856527077 33440978888088 37621101249099 39014475369436 41801223610110 48768094211795 50161468332132 55734964813480 58521713054154 62701835415165 66881957776176 75242202498198 78028950738872 83602447220220 87782569581231 97536188423590 100322936664264 111469929626960 117043426108308 125403670830330 146304282635385 150484404996396 156057901477744 167204894440440 175565139162462 188105506245495 195072376847180 200645873328528 234086852216616 250807341660660 263347708743693 292608565270770 300968809992792 334409788880880 351130278324924 376211012490990 390144753694360 438912847906155 468173704433232 501614683321320 526695417487386 585217130541540 601937619985584 702260556649848 752422024981980 780289507388720 877825695812310 1003229366642640 1053390834974772 1170434261083080 1316738543718465 1404521113299696 1504844049963960 1755651391624620 2106781669949544 2340868522166160 2633477087436930 3009688099927920 3511302783249240 4213563339899088 5266954174873860 7022605566498480 10533908349747720 21067816699495440
• Sum of all divisors σ(n): 82933627642517760
• Sum of proper divisors (its aliquot sum) s(n): 61865810943022320
• 21067816699495440 is an abundant number, because the sum of its proper divisors (61865810943022320) is greater than itself. Its abundance is 40797994243526880

Bases of 21067816699495440

• Binary: 1001010110110010001000101010010100100010000010000010000₂
• Hexadecimal: 0x4AD91152910410
• Base-36: 5RFX1DNYZO0

Squares and roots of 21067816699495440

• 21067816699495440 squared (21067816699495440²) is 443852900483538934811950580793600
• 21067816699495440 cubed (21067816699495440³) is 9351011548926589226463449400669387548074781184000
• The square root of 21067816699495440 is 145147568.6999111949
• The cube root of 21067816699495440 is 276189.0844417851

Scales and comparisons

• 21,067,816,699,495,440 seconds is equal to 669,891,404 years, 2 days, 23 hours, 24 minutes.
• To count from 1 to 21,067,816,699,495,440 would take you about two billion, nine million, six hundred seventy-four thousand, two hundred twelve 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 21067816699495440 cubic inches would be around 23015.8 feet tall.

Recreational maths with 21067816699495440

• 21067816699495440 backwards is 04459499661876012
• The number of decimal digits it has is: 17
• The sum of 21067816699495440's digits is 81
• More coming soon!