21721859849683431

Names of 21721859849683431

• Cardinal: 21721859849683431 can be written as Twenty-one quadrillion, seven hundred twenty-one trillion, eight hundred fifty-nine billion, eight hundred forty-nine million, six hundred eighty-three thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 2.1721859849683431 × 10¹⁶

Factors of 21721859849683431

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 236

Divisors of 21721859849683431

• Number of divisors d(n): 240
• Complete list of divisors:
  1 3 9 27 31 81 89 93 113 267 279 339 801 837 961 1017 2403 2511 2759 2883 3051 3503 7209 7921 8277 8649 9153 10057 10509 12769 23763 24831 25947 29791 30171 31527 38307 71289 74493 77841 85529 89373 90513 94581 108593 114921 213867 223479 245551 256587 268119 271539 283743 311767 325779 344763 395839 641601 704969 736653 769761 804357 814617 895073 935301 977337 1034289 1136441 1187517 2114907 2209959 2309283 2413071 2651399 2685219 2805903 2932011 3366383 3409323 3562551 6344721 6629877 6927849 7612081 7954197 8055657 8417709 8796033 9664777 10099149 10227969 10687653 12271009 19034163 19889631 21854039 22836243 23862591 24166971 25253127 27747263 28994331 30297447 30683907 32062959 35229671 36813027 57102489 65562117 68508729 71587773 72500913 79661497 83241789 86982993 90892341 92051721 101143249 105689013 110439081 196686351 205526187 214763319 235974511 238984491 249725367 260948979 272677023 299608087 303429747 317067039 331317243 380401279 590059053 616578561 677475209 707923533 716953473 749176101 782846937 860165153 898824261 910289241 951201117 993951729 1092119801 1141203837 1770177159 2032425627 2123770599 2150860419 2247528303 2469506407 2580495459 2696472783 2730867723 2853603351 3135440719 3276359403 3423611511 6097276881 6371311797 6452581257 7408519221 7741486377 8089418349 8192603169 9001749161 9406322157 9829078209 10270834533 18291830643 19113935391 21001731479 22225557663 23224459131 24268255047 26665119743 27005247483 28218966471 29487234627 30812503599 33855713831 54875491929 63005194437 66676672989 69673377393 76554698617 79995359229 81015742449 84656899413 88461703881 97198662289 101567141493 189015583311 200030018967 229664095851 239986077687 243047227347 253970698239 279054223991 291595986867 304701424479 567046749933 688992287553 719958233061 729141682041 837162671973 874787960601 914104273437 1701140249799 2066976862659 2159874699183 2373195657127 2511488015919 2624363881803 2742312820311 3013158530959 6200930587977 7119586971381 7534464047757 7873091645409 8650680943721 9039475592877 21358760914143 22603392143271 25952042831163 27118426778631 64076282742429 77856128493489 81355280335893 192228848227287 233568385480467 244065841007679 268171109255351 700705156441401 804513327766053 2413539983298159 7240619949894477 21721859849683431
• Sum of all divisors σ(n): 34214072787797760
• Sum of proper divisors (its aliquot sum) s(n): 12492212938114329
• 21721859849683431 is a deficient number, because the sum of its proper divisors (12492212938114329) is less than itself. Its deficiency is 9229646911569102

Bases of 21721859849683431

• Binary: 1001101001010111110101010011100001100111000000111100111₂
• Hexadecimal: 0x4D2BEA9C3381E7
• Base-36: 5XVR8NKP7FR

Squares and roots of 21721859849683431

• 21721859849683431 squared (21721859849683431²) is 471839195329289087598390915931761
• 21721859849683431 cubed (21721859849683431³) is 10249224872530222498720422844210909591830248351991
• The square root of 21721859849683431 is 147383377.1145288657
• The cube root of 21721859849683431 is 279018.0734928487

Scales and comparisons

• 21,721,859,849,683,431 seconds is equal to 690,687,953 years, 4 weeks, 6 days, 21 hours, 23 minutes, 51 seconds.
• To count from 1 to 21,721,859,849,683,431 would take you about two billion, seventy-two million, sixty-three thousand, eight hundred fifty-nine 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 21721859849683431 cubic inches would be around 23251.5 feet tall.

Recreational maths with 21721859849683431

• 21721859849683431 backwards is 13438694895812712
• 21721859849683431 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21721859849683431's digits is 81
• More coming soon!