21918833313993

Names of 21918833313993

• Cardinal: 21918833313993 can be written as Twenty-one trillion, nine hundred eighteen billion, eight hundred thirty-three million, three hundred thirteen thousand, nine hundred ninety-three.

Scientific notation

• Scientific notation: 2.1918833313993 × 10¹³

Factors of 21918833313993

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 218

Divisors of 21918833313993

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 7 9 11 21 27 33 49 63 77 99 147 189 197 231 297 441 539 591 693 1323 1379 1617 1773 2079 2167 4137 4851 5319 6501 9653 12411 14553 15169 19503 28959 37233 38809 45507 58509 86877 106183 116427 136521 260631 271663 318549 349281 409563 426899 814989 955647 1047843 1280697 1901641 2444967 2866941 2988293 3842091 5704923 7334901 7645373 8964879 11526273 17114769 20918051 22936119 26894637 51344307 53517611 62754153 68808357 80683911 84099103 160552833 188262459 206425071 252297309 374623277 481658499 564787377 588693721 756891927 1123869831 1444975497 1506138481 1766081163 2270675781 3371609493 4120856047 4518415443 5298243489 10114828479 10542969367 12362568141 13555246329 15894730467 16567523291 31628908101 37087704423 40665738987 49702569873 73800785569 94886724303 111263113269 115972663037 149107709619 221402356707 284660172909 347917989111 447323128857 664207070121 811808641259 1043753967333 1992621210363 2435425923777 3131261901999 7306277771331 21918833313993
• Sum of all divisors σ(n): 41418193476960
• Sum of proper divisors (its aliquot sum) s(n): 19499360162967
• 21918833313993 is a deficient number, because the sum of its proper divisors (19499360162967) is less than itself. Its deficiency is 2419473151026

Bases of 21918833313993

• Binary: 100111110111101100000010001100000100011001001₂
• Hexadecimal: 0x13EF604608C9
• Base-36: 7RPDFFE89

Squares and roots of 21918833313993

• 21918833313993 squared (21918833313993²) is 480435253846609358929604049
• 21918833313993 cubed (21918833313993³) is 10530580247229744815673462344537981157657
• The square root of 21918833313993 is 4681755.3667393815
• The cube root of 21918833313993 is 27985.8914100371

Scales and comparisons

• 21,918,833,313,993 seconds is equal to 696,951 years, 5 weeks, 1 day, 9 hours, 26 minutes, 33 seconds.
• To count from 1 to 21,918,833,313,993 would take you about one million, seven hundred forty-two thousand, three hundred seventy-seven 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 21918833313993 cubic inches would be around 2332.2 feet tall.

Recreational maths with 21918833313993

• 21918833313993 backwards is 39931333881912
• 21918833313993 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21918833313993's digits is 63
• More coming soon!