16720012387689821

Names of 16720012387689821

• Cardinal: 16720012387689821 can be written as Sixteen quadrillion, seven hundred twenty trillion, twelve billion, three hundred eighty-seven million, six hundred eighty-nine thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.6720012387689821 × 10¹⁶

Factors of 16720012387689821

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 227571

Divisors of 16720012387689821

• Number of divisors d(n): 128
• Complete list of divisors:
  1 7 29 59 67 149 203 413 469 617 1043 1711 1943 3953 4319 4321 8791 9983 11977 13601 17893 27671 30247 36403 41339 61537 69881 91933 114637 125251 226643 254821 254939 289373 289507 588997 643531 802459 1055687 1198831 1586501 1784573 2026549 2439001 2666057 4122979 5424047 6159511 6572647 7389809 8391817 13371937 15185081 17073007 17080913 18662399 33769807 37968329 43116577 46008529 70731029 93603559 106295567 119566391 139838731 157297363 178625819 236388649 363411149 387786173 440367349 495117203 895919779 978871117 979324403 1101081541 1250380733 1992418613 2262577069 2543878043 2714503211 3082571443 4055323199 6271438453 6855270821 8250485129 9369194977 10538923321 13946930291 15838039483 20835970919 25981673591 28387262393 57753395903 57780139777 65584364839 65614735001 73772463247 133492047071 145851796433 181871715137 239264068741 271706654333 404460978439 459303145007 552782503643 604243156651 934444329497 1229322284221 1396010051573 1674848481187 1901946580331 3869477525501 3871269365059 4229702096557 8605255989547 9772070361011 16030692605647 27098885555413 35650346242409 40484291495617 82364593042807 112214848239529 249552423696863 283390040469319 576552151299649 2388573198241403 16720012387689821
• Sum of all divisors σ(n): 20572892904960000
• Sum of proper divisors (its aliquot sum) s(n): 3852880517270179
• 16720012387689821 is a deficient number, because the sum of its proper divisors (3852880517270179) is less than itself. Its deficiency is 12867131870419642

Bases of 16720012387689821

• Binary: 111011011001101100001100111111000000100010010101011101₂
• Hexadecimal: 0x3B66C33F02255D
• Base-36: 4KMQZNHPBVH

Squares and roots of 16720012387689821

• 16720012387689821 squared (16720012387689821²) is 279558814244501069099101307012041
• 16720012387689821 cubed (16720012387689821³) is 4674226837255935462772672755796226640856220134661
• The square root of 16720012387689821 is 129305886.9026844461
• The cube root of 16720012387689821 is 255708.7160767997

Scales and comparisons

• 16,720,012,387,689,821 seconds is equal to 531,644,675 years, 27 weeks, 5 days, 13 hours, 23 minutes, 41 seconds.
• To count from 1 to 16,720,012,387,689,821 would take you about one billion, five hundred ninety-four million, nine hundred thirty-four thousand and twenty-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 16720012387689821 cubic inches would be around 21309.1 feet tall.

Recreational maths with 16720012387689821

• 16720012387689821 backwards is 12898678321002761
• The number of decimal digits it has is: 17
• The sum of 16720012387689821's digits is 71
• More coming soon!