21008115653408

Names of 21008115653408

• Cardinal: 21008115653408 can be written as Twenty-one trillion, eight billion, one hundred fifteen million, six hundred fifty-three thousand, four hundred eight.

Scientific notation

• Scientific notation: 2.1008115653408 × 10¹³

Factors of 21008115653408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 410

Divisors of 21008115653408

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 8 13 16 17 26 29 32 34 52 58 68 104 116 136 208 221 232 272 349 377 416 442 464 493 544 698 754 841 884 928 986 1396 1508 1682 1768 1972 2792 3016 3364 3536 3944 4537 5584 5933 6032 6409 6728 7072 7888 9074 10121 10933 11168 11866 12064 12818 13456 14297 15776 18148 20242 21866 23732 24389 25636 26912 28594 36296 40484 43732 47464 48778 51272 57188 72592 77129 80968 87464 94928 97556 102544 114376 121801 131573 145184 154258 161936 172057 174928 185861 189856 195112 205088 228752 243602 263146 293509 308516 317057 323872 344114 349856 371722 390224 414613 457504 487204 526292 587018 617032 634114 688228 743444 780448 829226 974408 1052584 1174036 1234064 1268228 1376456 1486888 1583413 1658452 1948816 2070617 2105168 2236741 2348072 2468128 2536456 2752912 2973776 3166826 3316904 3532229 3815617 3897632 4141234 4210336 4473482 4696144 4989653 5072912 5389969 5505824 5947552 6333652 6633808 7064458 7631234 8282468 8511761 8946964 9392288 9979306 10145824 10779938 12667304 13267616 14128916 15262468 16564936 17023522 17893928 19958612 21559876 25334608 26918021 28257832 30524936 33129872 34047044 35787856 39917224 43119752 45918977 50669216 53836042 56515664 60047893 61049872 64865489 66259744 68094088 71575712 79834448 86239504 91837954 102434641 107672084 110652893 113031328 120095786 122099744 129730978 136188176 144699937 159668896 172479008 183675908 204869282 215344168 221305786 240191572 259461956 272376352 289399874 367351816 409738564 430688336 442611572 480383144 518923912 578799748 734703632 780622609 819477128 861376672 885223144 960766288 1037847824 1157599496 1331650333 1469407264 1561245218 1638954256 1741388897 1770446288 1881099181 1921532576 2075695648 2315198992 2663300666 2970604589 3122490436 3277908512 3482777794 3540892576 3762198362 4630397984 5326601332 5941209178 6244980872 6965555588 7524396724 10653202664 11882418356 12489961744 13931111176 15048793448 21306405328 22638055661 23764836712 24979923488 27862222352 30097586896 38617859657 42612810656 45276111322 47529673424 50500278013 55724444704 60195173792 77235719314 90552222644 95059346848 101000556026 154471438628 181104445288 202001112052 308942877256 362208890576 404002224104 617885754512 656503614169 724417781152 808004448208 1235771509024 1313007228338 1616008896416 2626014456676 5252028913352 10504057826704 21008115653408
• Sum of all divisors σ(n): 48985941911760
• Sum of proper divisors (its aliquot sum) s(n): 27977826258352
• 21008115653408 is an abundant number, because the sum of its proper divisors (27977826258352) is greater than itself. Its abundance is 6969710604944

Bases of 21008115653408

• Binary: 100110001101101010101010001010101101100100000₂
• Hexadecimal: 0x131B55455B20
• Base-36: 7G2ZTN9Y8

Squares and roots of 21008115653408

• 21008115653408 squared (21008115653408²) is 441340923306966238782014464
• 21008115653408 cubed (21008115653408³) is 9271741159414617061608215941453866893312
• The square root of 21008115653408 is 4583461.0998030735
• The cube root of 21008115653408 is 27592.7953493155

Scales and comparisons

• 21,008,115,653,408 seconds is equal to 667,993 years, 4 weeks, 6 days, 17 hours, 30 minutes, 8 seconds.
• To count from 1 to 21,008,115,653,408 would take you about one million, six hundred sixty-nine thousand, nine hundred eighty-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 21008115653408 cubic inches would be around 2299.4 feet tall.

Recreational maths with 21008115653408

• 21008115653408 backwards is 80435651180012
• The number of decimal digits it has is: 14
• The sum of 21008115653408's digits is 44
• More coming soon!