21478253712993

Names of 21478253712993

• Cardinal: 21478253712993 can be written as Twenty-one trillion, four hundred seventy-eight billion, two hundred fifty-three million, seven hundred twelve thousand, nine hundred ninety-three.

Scientific notation

• Scientific notation: 2.1478253712993 × 10¹³

Factors of 21478253712993

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 407

Divisors of 21478253712993

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 11 19 21 27 33 57 63 77 99 121 133 171 189 209 231 297 363 367 399 513 627 693 847 1089 1101 1197 1463 1881 2079 2299 2541 2569 3267 3303 3591 4037 4389 5643 6897 6973 7623 7707 9909 12111 13167 16093 20691 20919 22869 23121 28259 36333 39501 44407 48279 48811 62073 62757 69363 76703 84777 108999 133221 134689 144837 146433 188271 230109 254331 310849 399663 404067 434511 439299 536921 690327 762993 843733 932547 942823 1198989 1212201 1317897 1481579 1610763 2070981 2531199 2559091 2797641 2828469 3636603 4444737 4832289 5906131 7593597 7677273 8392923 8485407 10371053 13334211 14496867 16297369 17718393 17913637 22780791 23031819 25456221 28150001 31113159 40002633 48892107 49430863 53155179 53740911 69095457 84450003 93339477 114081583 146676321 148292589 159465537 161222733 197050007 253350009 280018431 309650011 342244749 346016041 440028963 444877767 483668199 543739493 591150021 760050027 928950033 939186397 1026734247 1038048123 1334633301 1631218479 1773450063 2167550077 2786850099 2817559191 3080202741 3114144369 3806176451 4893655437 5320350189 5981134423 6502650231 6574304779 8360550297 8452677573 9342433107 10331050367 11418529353 14680966311 17943403269 19507950693 19722914337 25358032719 30993151101 34255588059 41867940961 53830209807 58523852079 59168743011 72317352569 92979453303 102766764177 113641554037 125603822883 161490629421 177506229033 216952057707 278938359909 340924662111 376811468649 650856173121 795490878259 1022773986333 1130434405947 1952568519363 2386472634777 3068321958999 7159417904331 21478253712993
• Sum of all divisors σ(n): 42190511104000
• Sum of proper divisors (its aliquot sum) s(n): 20712257391007
• 21478253712993 is a deficient number, because the sum of its proper divisors (20712257391007) is less than itself. Its deficiency is 765996321986

Bases of 21478253712993

• Binary: 100111000100011001011101011101101011001100001₂
• Hexadecimal: 0x1388CBAED661
• Base-36: 7M2Z1PIE9

Squares and roots of 21478253712993

• 21478253712993 squared (21478253712993²) is 461315382559697590817018049
• 21478253712993 cubed (21478253712993³) is 9908248828323611016444854731386546810657
• The square root of 21478253712993 is 4634463.6920568275
• The cube root of 21478253712993 is 27797.1106640321

Scales and comparisons

• 21,478,253,712,993 seconds is equal to 682,942 years, 1 week, 4 days, 10 hours, 56 minutes, 33 seconds.
• To count from 1 to 21,478,253,712,993 would take you about one million, seven hundred seven thousand, three hundred fifty-five 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 21478253712993 cubic inches would be around 2316.4 feet tall.

Recreational maths with 21478253712993

• 21478253712993 backwards is 39921735287412
• 21478253712993 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21478253712993's digits is 63
• More coming soon!