21638989994544

Names of 21638989994544

• Cardinal: 21638989994544 can be written as Twenty-one trillion, six hundred thirty-eight billion, nine hundred eighty-nine million, nine hundred ninety-four thousand, five hundred forty-four.

Scientific notation

• Scientific notation: 2.1638989994544 × 10¹³

Factors of 21638989994544

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1105

Divisors of 21638989994544

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 81 104 108 117 144 156 162 208 216 234 312 324 351 432 468 624 648 702 936 1053 1087 1296 1404 1872 2106 2174 2808 3261 4212 4348 5616 6522 8424 8696 9783 13044 14131 16848 17392 19566 26088 28262 29349 39132 42393 52176 56524 58698 78264 84786 88047 113048 117396 127179 156528 169572 176094 226096 234792 254358 339144 352188 381537 469584 508716 678288 704376 763074 1017432 1144611 1181569 1408752 1526148 2034864 2289222 2363138 3052296 3544707 4578444 4726276 6104592 7089414 9156888 9452552 10634121 14178828 15360397 18313776 18905104 21268242 28357656 30720794 31902363 42536484 46081191 56715312 61441588 63804726 85072968 92162382 95707089 122883176 127609452 138243573 170145936 184324764 191414178 245766352 255218904 276487146 368649528 382828356 414730719 510437808 552974292 737299056 765656712 829461438 1105948584 1244192157 1284365503 1531313424 1658922876 2211897168 2488384314 2568731006 3317845752 3853096509 4976768628 5137462012 6635691504 7706193018 9953537256 10274924024 11559289527 15412386036 16696751539 19907074512 20549848048 23118579054 30824772072 33393503078 34677868581 46237158108 50090254617 61649544144 66787006156 69355737162 92474316216 100180509234 104033605743 133574012312 138711474324 150270763851 184948632432 200361018468 208067211486 267148024624 277422948648 300541527702 400722036936 416134422972 450812291553 554845897296 601083055404 801444073872 832268845944 901624583106 1202166110808 1352436874659 1664537691888 1803249166212 2404332221616 2704873749318 3606498332424 5409747498636 7212996664848 10819494997272 21638989994544
• Sum of all divisors σ(n): 67509276074240
• Sum of proper divisors (its aliquot sum) s(n): 45870286079696
• 21638989994544 is an abundant number, because the sum of its proper divisors (45870286079696) is greater than itself. Its abundance is 24231296085152

Bases of 21638989994544

• Binary: 100111010111000111000010011111101101000110000₂
• Hexadecimal: 0x13AE384FDA30
• Base-36: 7O4TBXV00

Squares and roots of 21638989994544

• 21638989994544 squared (21638989994544²) is 468245887983975341149767936
• 21638989994544 cubed (21638989994544³) is 10132368085071613002545847408111506141184
• The square root of 21638989994544 is 4651772.7797630013
• The cube root of 21638989994544 is 27866.2799220339

Scales and comparisons

• 21,638,989,994,544 seconds is equal to 688,052 years, 49 weeks, 2 days, 2 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,638,989,994,544 would take you about one million, seven hundred twenty thousand, one hundred thirty-two 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 21638989994544 cubic inches would be around 2322.2 feet tall.

Recreational maths with 21638989994544

• 21638989994544 backwards is 44549998983612
• 21638989994544 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21638989994544's digits is 81
• More coming soon!