1642864320804950721

Names of 1642864320804950721

• Cardinal: 1642864320804950721 can be written as One quintillion, six hundred forty-two quadrillion, eight hundred sixty-four trillion, three hundred twenty billion, eight hundred four million, nine hundred fifty thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.642864320804950721 × 10¹⁸

Factors of 1642864320804950721

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3021

Divisors of 1642864320804950721

• Number of divisors d(n): 243
• Complete list of divisors:
  1 3 9 23 69 79 83 207 237 249 529 711 747 1587 1817 1909 2833 4761 5451 5727 6241 6557 6889 8499 16353 17181 18723 19671 20667 25497 41791 43907 56169 59013 62001 65159 125373 131721 143543 150811 158447 195477 223807 235139 376119 395163 430629 452433 475341 518003 544231 586431 671421 705417 1291887 1357299 1426023 1498657 1554009 1632693 2014263 2116251 3301489 3468653 3644281 4495971 4662027 4898079 5147561 5408197 8025889 9904467 10405959 10932843 11914069 12517313 13487913 15442683 16224591 17680753 18575981 19516537 24077667 29713401 31217877 32798529 35742207 37551939 42994249 46328049 48673773 53042259 55727943 58549611 72233001 107226621 112655817 118393903 124388531 128982747 159126777 167183829 175648833 184595447 274023587 287898199 355181709 373165593 386948241 406657319 427247563 448880351 553786341 634045231 666148787 822070761 863694597 988867727 1065545127 1119496779 1219971957 1281742689 1346641053 1467502499 1541806423 1661359023 1902135693 1998446361 2466212283 2591083791 2966603181 3659915871 3845228067 4039923159 4245695281 4402507497 4625419269 5706407079 5995339083 8899809543 9353118337 9826693949 10324248073 12737085843 13207522491 13876257807 14583040313 15321422101 22743957721 28059355011 29480081847 30972744219 33752557477 35461547729 38211257529 43749120939 45964266303 50089573249 52625754173 55290349321 68231873163 84178065033 88440245541 92918232657 101257672431 106384643187 121802707417 131247362817 137892798909 150268719747 157877262519 165871047963 204695619489 303773017293 319153929561 335409927199 352392708323 365408122251 450806159241 473631787557 497613143889 776308821971 815615597767 1006229781597 1057178124969 1096224366753 1152060184727 1210392345979 1271678034383 2328926465913 2446846793301 2801462270591 3018689344791 3171534374907 3456180554181 3631177037937 3815034103149 4157434579667 4367937596359 6986779397739 7340540379903 8404386811773 10368541662543 10893531113811 11445102309447 12472303739001 13103812789077 25213160435319 26497384248721 27839023957517 29248594790809 37416911217003 39311438367231 64433632223593 79492152746163 83517071872551 87745784372427 95620995332341 100462564716257 193300896670779 238476458238489 250551215617653 263237353117281 286862985997023 301387694148771 345067070112361 579902690012337 860588957991069 904163082446313 1035201210337083 2199282892643843 2310638988473911 3105603631011249 6597848677931529 6931916965421733 7936542612584303 19793546033794587 20795750896265199 23809627837752909 71428883513258727 182540480089438969 547621440268316907 1642864320804950721
• Sum of all divisors σ(n): 2544019369938224451
• Sum of proper divisors (its aliquot sum) s(n): 901155049133273730
• 1642864320804950721 is a deficient number, because the sum of its proper divisors (901155049133273730) is less than itself. Its deficiency is 741709271671676991

Bases of 1642864320804950721

• Binary: 1011011001100101000000110010100111111101111100001001011000001₂
• Hexadecimal: 0x16CCA0653FBE12C1
• Base-36: CHCASPXFI669

Squares and roots of 1642864320804950721

• 1642864320804950721 squared (1642864320804950721²) is 2699003176573912038426295103238419841
• 1642864320804950721 cubed (1642864320804950721³) is 4434096020532504483713489980022942358669508605913655361
• 1642864320804950721 is a perfect square number. Its square root is 1281742689
• The cube root of 1642864320804950721 is 1179959.8571053517

Scales and comparisons

• 1,642,864,320,804,950,721 seconds is equal to 52,238,003,688 years, 31 weeks, 21 hours, 25 minutes, 21 seconds.
• To count from 1 to 1,642,864,320,804,950,721 would take you about one hundred eighty-two billion, eight hundred thirty-three million, twelve thousand, nine hundred ten 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 1642864320804950721 cubic inches would be around 98330 feet tall.

Recreational maths with 1642864320804950721

• 1642864320804950721 backwards is 1270594080234682461
• The number of decimal digits it has is: 19
• The sum of 1642864320804950721's digits is 72
• More coming soon!