21421616089889978

Names of 21421616089889978

• Cardinal: 21421616089889978 can be written as Twenty-one quadrillion, four hundred twenty-one trillion, six hundred sixteen billion, eighty-nine million, eight hundred eighty-nine thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1421616089889978 × 10¹⁶

Factors of 21421616089889978

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 25921

Divisors of 21421616089889978

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 19 38 109 218 361 722 1933 2071 3866 4142 10711 13147 21422 26294 36727 39349 73454 78698 203509 210697 249793 407018 421394 499586 697813 1167499 1395626 1433023 2334998 2866046 3866671 4003243 4746067 7733342 8006486 9492134 20704363 22182481 25413151 27227437 41408726 44364962 50826302 54454874 76061617 140817517 152123234 281635034 393382897 421467139 482849869 517321303 786765794 842934278 965699738 1034642606 2256775567 2675532823 2770033459 4513551134 5351065646 5540066918 7474275043 9174147511 14948550086 15349109353 18348295022 30698218706 42878735773 50835123637 52630635721 85757471546 101670247274 105261271442 272200260361 291633077707 544400520722 583266155414 814695979687 999982078699 1629391959374 1999964157398 5171804946859 5541028476433 10343609893718 11082056952866 29669828379349 59339656758698 98264293990321 196528587980642 563726739207631 1127453478415262 10710808044944989 21421616089889978
• Sum of all divisors σ(n): 34247245319464320
• Sum of proper divisors (its aliquot sum) s(n): 12825629229574342
• 21421616089889978 is a deficient number, because the sum of its proper divisors (12825629229574342) is less than itself. Its deficiency is 8595986860315636

Bases of 21421616089889978

• Binary: 1001100000110101101100010101001100011010111110010111010₂
• Hexadecimal: 0x4C1AD8A98D7CBA
• Base-36: 5UXBUKQ6LKQ

Squares and roots of 21421616089889978

• 21421616089889978 squared (21421616089889978²) is 458885635902633190009104144840484
• 21421616089889978 cubed (21421616089889978³) is 9830071921471241301033773086769420881563920269352
• The square root of 21421616089889978 is 146361252.0098471213
• The cube root of 21421616089889978 is 277726.5572493375

Scales and comparisons

• 21,421,616,089,889,978 seconds is equal to 681,141,130 years, 12 weeks, 6 days, 18 hours, 19 minutes, 38 seconds.
• To count from 1 to 21,421,616,089,889,978 would take you about two billion, forty-three million, four hundred twenty-three thousand, three hundred ninety 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 21421616089889978 cubic inches would be around 23143.9 feet tall.

Recreational maths with 21421616089889978

• 21421616089889978 backwards is 87998898061612412
• The number of decimal digits it has is: 17
• The sum of 21421616089889978's digits is 89
• More coming soon!