21016109961

Names of 21016109961

• Cardinal: 21016109961 can be written as Twenty-one billion, sixteen million, one hundred nine thousand, nine hundred sixty-one.

Scientific notation

• Scientific notation: 2.1016109961 × 10¹⁰

Factors of 21016109961

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 276

Divisors of 21016109961

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 9 11 21 27 31 33 63 67 77 93 99 157 189 201 217 231 279 297 341 469 471 603 651 693 737 837 961 1023 1099 1407 1413 1727 1809 1953 2077 2079 2211 2387 2883 3069 3297 4221 4239 4867 5159 5181 5859 6231 6633 6727 7161 8649 9207 9891 10519 10571 12089 12663 14539 14601 15477 15543 18693 19899 20181 21483 22847 25947 29673 31557 31713 34069 36267 43617 43803 46431 46629 53537 56079 60543 64387 64449 68541 73633 73997 94671 95139 102207 108801 115709 130851 131409 139293 150877 159929 160611 181629 193161 205623 220899 221991 284013 285417 306621 326089 326403 347127 374759 392553 450709 452631 479787 481833 579483 616869 662697 665973 708257 809963 919863 978267 1041381 1056139 1124277 1352127 1357893 1439361 1445499 1659647 1738449 1988091 1997919 2124771 2282623 2429889 2934801 3124143 3168417 3372831 3586979 4056381 4073679 4318083 4957799 4978941 6374313 6847869 7289667 8804403 9505251 10108759 10118493 10760937 11617529 12169143 14873397 14936823 19122939 20543607 21869001 25108853 28515753 30326277 32282811 34852587 44620191 44810469 61630821 70761313 75326559 90978831 96848433 104557761 111196349 133860573 212283939 225979677 272936493 313673283 333589047 636851817 677939031 778374443 1000767141 1910555451 2335123329 3002301423 7005369987 21016109961
• Sum of all divisors σ(n): 40968161280
• Sum of proper divisors (its aliquot sum) s(n): 19952051319
• 21016109961 is a deficient number, because the sum of its proper divisors (19952051319) is less than itself. Its deficiency is 1064058642

Bases of 21016109961

• Binary: 10011100100101010000110001110001001₂
• Hexadecimal: 0x4E4A86389
• Base-36: 9NKG689

Squares and roots of 21016109961

• 21016109961 squared (21016109961²) is 441676877892843421521
• 21016109961 cubed (21016109961³) is 9282329833027167321640809870681
• The square root of 21016109961 is 144969.3414519083
• The cube root of 21016109961 is 2759.6294906705

Scales and comparisons

• 21,016,109,961 seconds is equal to 668 years, 12 weeks, 6 days, 19 minutes, 21 seconds.
• To count from 1 to 21,016,109,961 would take you about one thousand, three hundred thirty-six 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 21016109961 cubic inches would be around 230 feet tall.

Recreational maths with 21016109961

• 21016109961 backwards is 16990161012
• The number of decimal digits it has is: 11
• The sum of 21016109961's digits is 36
• More coming soon!