6438109638821

Names of 6438109638821

• Cardinal: 6438109638821 can be written as Six trillion, four hundred thirty-eight billion, one hundred nine million, six hundred thirty-eight thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 6.438109638821 × 10¹²

Factors of 6438109638821

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2166

Divisors of 6438109638821

• Number of divisors d(n): 84
• Complete list of divisors:
  1 7 29 31 49 203 217 343 841 899 1421 1519 2099 2401 5887 6293 9947 10633 14693 16807 26071 41209 44051 60871 65069 69629 74431 102851 117649 182497 288463 308357 426097 455483 487403 521017 719957 1277479 1765259 1887001 2019241 2158499 2982679 3188381 3411821 3647119 5039699 8942353 12356813 13209007 14134687 15109493 20878753 22318667 35277893 54723029 62596471 86497691 92463049 98942809 105766451 146151271 156230669 246945251 383061203 438175297 605483837 647241343 1023058897 1093614683 2681428421 3067227079 4238386859 4530689401 7161412279 7655302781 18769998947 29668708013 31714825807 131389992629 207680956091 222003780649 919729948403 6438109638821
• Sum of all divisors σ(n): 8033816918400
• Sum of proper divisors (its aliquot sum) s(n): 1595707279579
• 6438109638821 is a deficient number, because the sum of its proper divisors (1595707279579) is less than itself. Its deficiency is 4842402359242

Bases of 6438109638821

• Binary: 1011101101011111101001111001111000010100101₂
• Hexadecimal: 0x5DAFD3CF0A5
• Base-36: 2A5MK92G5

Squares and roots of 6438109638821

• 6438109638821 squared (6438109638821²) is 41449255721479867070270041
• 6438109638821 cubed (6438109638821³) is 266854852782416014755399345089446861661
• The square root of 6438109638821 is 2537343.0274247507
• The cube root of 6438109638821 is 18603.1343610039

Scales and comparisons

• 6,438,109,638,821 seconds is equal to 204,711 years, 50 weeks, 3 days, 20 hours, 33 minutes, 41 seconds.
• To count from 1 to 6,438,109,638,821 would take you about five hundred eleven thousand, seven hundred seventy-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 6438109638821 cubic inches would be around 1550.3 feet tall.

Recreational maths with 6438109638821

• 6438109638821 backwards is 1288369018346
• The number of decimal digits it has is: 13
• The sum of 6438109638821's digits is 59
• More coming soon!