21012150478312420

Names of 21012150478312420

• Cardinal: 21012150478312420 can be written as Twenty-one quadrillion, twelve trillion, one hundred fifty billion, four hundred seventy-eight million, three hundred twelve thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.101215047831242 × 10¹⁶

Factors of 21012150478312420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 192200

Divisors of 21012150478312420

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 10 14 20 28 35 49 70 83 98 140 166 196 245 332 343 415 490 581 686 830 980 1162 1372 1660 1715 2324 2905 3430 4067 5810 6860 8134 11620 16268 20335 28469 40670 56938 81340 113876 142345 192103 284690 384206 569380 768412 960515 1344721 1921030 2689442 3842060 5378884 6723605 9413047 13447210 15944549 18826094 26894420 31889098 37652188 47065235 63778196 65891329 79722745 94130470 111611843 131782658 159445490 188260940 223223686 263565316 318890980 329456645 446447372 558059215 658913290 781282901 1116118430 1317826580 1562565802 2232236860 3125131604 3906414505 5468980307 7812829010 10937960614 15625658020 21875921228 27344901535 36903562609 54689803070 73807125218 109379606140 147614250436 184517813045 258324938263 369035626090 516649876526 738071252180 1033299753052 1291624691315 1808274567841 2583249382630 3062995696547 3616549135682 5166498765260 6125991393094 7233098271364 9041372839205 12251982786188 12657921974887 15314978482735 18082745678410 21440969875829 25315843949774 30629956965470 36165491356820 42881939751658 50631687899548 61259913930940 63289609874435 85763879503316 107204849379145 126579219748870 150086789130803 214409698758290 253158439497740 300173578261606 428819397516580 600347156523212 750433945654015 1050607523915621 1500867891308030 2101215047831242 3001735782616060 4202430095662484 5253037619578105 10506075239156210 21012150478312420
• Sum of all divisors σ(n): 52078578650985600
• Sum of proper divisors (its aliquot sum) s(n): 31066428172673180
• 21012150478312420 is an abundant number, because the sum of its proper divisors (31066428172673180) is greater than itself. Its abundance is 10054277694360760

Bases of 21012150478312420

• Binary: 1001010101001100111000010000101001110100001001111100100₂
• Hexadecimal: 0x4AA670853A13E4
• Base-36: 5QW6OO54ZXG

Squares and roots of 21012150478312420

• 21012150478312420 squared (21012150478312420²) is 441510467723244860588771126256400
• 21012150478312420 cubed (21012150478312420³) is 9277084385550919769457486741346157485824224488000
• The square root of 21012150478312420 is 144955684.5325923049
• The cube root of 21012150478312420 is 275945.6172971415

Scales and comparisons

• 21,012,150,478,312,420 seconds is equal to 668,121,390 years, 18 weeks, 5 days, 13 hours, 53 minutes, 40 seconds.
• To count from 1 to 21,012,150,478,312,420 would take you about two billion, four million, three hundred sixty-four thousand, one hundred seventy-one 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 21012150478312420 cubic inches would be around 22995.5 feet tall.

Recreational maths with 21012150478312420

• 21012150478312420 backwards is 02421387405121012
• The number of decimal digits it has is: 17
• The sum of 21012150478312420's digits is 43
• More coming soon!