642689089330888640

Names of 642689089330888640

• Cardinal: 642689089330888640 can be written as Six hundred forty-two quadrillion, six hundred eighty-nine trillion, eighty-nine billion, three hundred thirty million, eight hundred eighty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.4268908933088864 × 10¹⁷

Factors of 642689089330888640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 87321887137379

Divisors of 642689089330888640

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 115 160 184 230 320 368 460 736 920 1472 1840 3680 7360 87321887137349 174643774274698 349287548549396 436609435686745 698575097098792 873218871373490 1397150194197584 1746437742746980 2008403404159027 2794300388395168 3492875485493960 4016806808318054 5588600776790336 6985750970987920 8033613616636108 10042017020795135 13971501941975840 16067227233272216 20084034041590270 27943003883951680 32134454466544432 40168068083180540 64268908933088864 80336136166361080 128537817866177728 160672272332722160 321344544665444320 642689089330888640
• Sum of all divisors σ(n): 1596942671967856800
• Sum of proper divisors (its aliquot sum) s(n): 954253582636968160
• 642689089330888640 is an abundant number, because the sum of its proper divisors (954253582636968160) is greater than itself. Its abundance is 311564493306079520

Bases of 642689089330888640

• Binary: 100011101011010010100101001001010110100101100011111111000000₂
• Hexadecimal: 0x8EB4A5256963FC0
• Base-36: 4VS69NPB2ABK

Squares and roots of 642689089330888640

• 642689089330888640 squared (642689089330888640²) is 413049265544966958313585212081049600
• 642689089330888640 cubed (642689089330888640³) is 265462256321887212702832031957560465937424471916544000
• The square root of 642689089330888640 is 801678919.1009631631
• The cube root of 642689089330888640 is 862979.1618639165

Scales and comparisons

• 642,689,089,330,888,640 seconds is equal to 20,435,525,072 years, 43 weeks, 5 days, 21 hours, 57 minutes, 20 seconds.
• To count from 1 to 642,689,089,330,888,640 would take you about sixty-one billion, three hundred six million, five hundred seventy-five thousand, two hundred eighteen 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 642689089330888640 cubic inches would be around 71914.9 feet tall.

Recreational maths with 642689089330888640

• 642689089330888640 backwards is 046888033980986246
• 642689089330888640 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 642689089330888640's digits is 92
• More coming soon!