642640838421049

Names of 642640838421049

• Cardinal: 642640838421049 can be written as Six hundred forty-two trillion, six hundred forty billion, eight hundred thirty-eight million, four hundred twenty-one thousand and forty-nine.

Scientific notation

• Scientific notation: 6.42640838421049 × 10¹⁴

Factors of 642640838421049

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 409

Divisors of 642640838421049

• Number of divisors d(n): 108
• Complete list of divisors:
  1 13 37 53 113 193 481 689 1469 1961 2509 2809 4181 5989 7141 10229 12769 21809 25493 36517 37249 54353 77857 92833 103933 132977 165997 221593 283517 317417 378473 472453 484237 542137 676757 806933 1155877 1351129 1378213 1974197 2464417 2880709 4126421 4209137 4920149 6141889 7047781 8797841 10490129 11744429 15026401 17916769 20059069 25040009 25664561 32037421 35868121 42767449 54718781 61261481 73045289 91183429 104632441 130614101 152677577 155738069 223084261 260767897 325520117 466285573 475632481 555976837 796399253 949588757 1185384577 1327120477 1360221733 1697983313 2024594897 2266674797 2900095393 3871400317 4832721737 6183222253 6922547353 8254117657 11823465833 17252566201 17598401797 25208521493 29466772361 50328204121 62825382581 89993115589 107303529541 153705055829 228779223361 256134252061 327710779409 437468235821 932715295241 1336051639129 3329745276793 5687087065673 12125298838133 17368671308677 49433910647773 642640838421049
• Sum of all divisors σ(n): 734717907254604
• Sum of proper divisors (its aliquot sum) s(n): 92077068833555
• 642640838421049 is a deficient number, because the sum of its proper divisors (92077068833555) is less than itself. Its deficiency is 550563769587494

Bases of 642640838421049

• Binary: 10010010000111101001111010111001000110101000111001₂
• Hexadecimal: 0x2487A7AE46A39
• Base-36: 6BSP4IP8OP

Squares and roots of 642640838421049

• 642640838421049 squared (642640838421049²) is 412987247206508808575406260401
• 642640838421049 cubed (642640838421049³) is 265402470801991847246333992716411086573580649
• The square root of 642640838421049 is 25350361.7019767393
• The cube root of 642640838421049 is 86295.7564810475

Scales and comparisons

• 642,640,838,421,049 seconds is equal to 20,433,990 years, 43 weeks, 5 days, 21 hours, 50 minutes, 49 seconds.
• To count from 1 to 642,640,838,421,049 would take you about fifty-one million, eighty-four thousand, nine hundred seventy-seven 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 642640838421049 cubic inches would be around 7191.3 feet tall.

Recreational maths with 642640838421049

• 642640838421049 backwards is 940124838046246
• The number of decimal digits it has is: 15
• The sum of 642640838421049's digits is 61
• More coming soon!