638620748871401139

Names of 638620748871401139

• Cardinal: 638620748871401139 can be written as Six hundred thirty-eight quadrillion, six hundred twenty trillion, seven hundred forty-eight billion, eight hundred seventy-one million, four hundred one thousand, one hundred thirty-nine.

Scientific notation

• Scientific notation: 6.38620748871401139 × 10¹⁷

Factors of 638620748871401139

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 110

Divisors of 638620748871401139

• Number of divisors d(n): 168
• Complete list of divisors:
  1 3 17 29 51 61 87 183 289 493 841 867 1037 1479 1769 2523 3111 3721 4913 5307 8381 11163 14297 14739 17629 25143 30073 42891 51301 52887 63257 90219 107909 142477 153903 189771 226981 243049 299693 323727 427431 511241 680943 729147 872117 899079 1075369 1533723 1834453 2616351 3129361 3226107 3858677 4131833 5503359 6582449 8691097 9388083 11576031 12395499 13845841 14825989 18281273 19747347 26073291 31185701 41537523 44477967 53199137 54843819 65597509 93557103 111901633 159597411 190891021 196792527 235379297 252041813 335704899 401529389 530156917 572673063 706137891 756125439 844596301 904385329 1115157653 1204588167 1590470751 1902327761 2533788903 2713155987 3245147357 3345472959 4001448049 5706983283 6825999613 9735442071 11644352281 12004344147 14358137117 15374550593 20477998839 24493292729 32339571937 34933056843 43074411351 46123651779 51520374361 55167505069 68024616833 73479878187 97018715811 116041993421 154561123083 165502515207 197953988777 204073850499 244088330989 348125980263 416385976393 593861966331 710305489141 732264992967 875846364137 937847586173 1249157929179 1494090856469 1972713888157 2130916467423 2627539092411 2813542758519 3365217809209 4149501626813 4482272569407 5918141664471 7078561598681 10095653427627 12075193315397 12448504880439 14889388190329 21235684796043 25399544559973 36225579946191 43328634837601 44668164570987 57208702756553 76198633679919 120335547177577 129985904512803 171626108269659 205278286361749 253119599235593 361006641532731 431792257519541 615834859085247 736586792239217 759358797706779 1295376772558623 2209760376717651 3489730868149733 7340468377832197 10469192604449199 12521975468066689 22021405133496591 37565926404200067 212873582957133713 638620748871401139
• Sum of all divisors σ(n): 952590495540350160
• Sum of proper divisors (its aliquot sum) s(n): 313969746668949021
• 638620748871401139 is a deficient number, because the sum of its proper divisors (313969746668949021) is less than itself. Its deficiency is 324651002202452118

Bases of 638620748871401139

• Binary: 100011011100110101100011000000000010101011000111111010110011₂
• Hexadecimal: 0x8DCD63002AC7EB3
• Base-36: 4UO45TWAX7LF

Squares and roots of 638620748871401139

• 638620748871401139 squared (638620748871401139²) is 407836460889069199151803889050497321
• 638620748871401139 cubed (638620748871401139³) is 260452826070039273530549817965437351732249102035848619
• The square root of 638620748871401139 is 799137503.1065687253
• The cube root of 638620748871401139 is 861154.3669193413
• Being both a perfect square and a perfect cube, 638620748871401139 is also a perfect sixth number.

Scales and comparisons

• 638,620,748,871,401,139 seconds is equal to 20,306,164,430 years, 22 weeks, 4 days, 6 hours, 5 minutes, 39 seconds.
• To count from 1 to 638,620,748,871,401,139 would take you about sixty billion, nine hundred eighteen million, four hundred ninety-three thousand, two hundred ninety-one 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 638620748871401139 cubic inches would be around 71762.9 feet tall.

Recreational maths with 638620748871401139

• 638620748871401139 backwards is 931104178847026836
• The number of decimal digits it has is: 18
• The sum of 638620748871401139's digits is 78
• More coming soon!