21435407506971864

Names of 21435407506971864

• Cardinal: 21435407506971864 can be written as Twenty-one quadrillion, four hundred thirty-five trillion, four hundred seven billion, five hundred six million, nine hundred seventy-one thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1435407506971864 × 10¹⁶

Factors of 21435407506971864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 42530570450353

Divisors of 21435407506971864

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 28 36 42 56 63 72 84 126 168 252 504 42530570450341 85061140900682 127591711351023 170122281801364 255183422702046 297713993152387 340244563602728 382775134053069 510366845404092 595427986304774 765550268106138 893141979457161 1020733690808184 1190855972609548 1531100536212276 1786283958914322 2381711945219096 2679425938371483 3062201072424552 3572567917828644 5358851876742966 7145135835657288 10717703753485932 21435407506971864
• Sum of all divisors σ(n): 66347689902533520
• Sum of proper divisors (its aliquot sum) s(n): 44912282395561656
• 21435407506971864 is an abundant number, because the sum of its proper divisors (44912282395561656) is greater than itself. Its abundance is 23476874888589792

Bases of 21435407506971864

• Binary: 1001100001001110110001110111010000100011001110011011000₂
• Hexadecimal: 0x4C2763BA119CD8
• Base-36: 5V27U9JTVQ0

Squares and roots of 21435407506971864

• 21435407506971864 squared (21435407506971864²) is 459476694989945741797766887634496
• 21435407506971864 cubed (21435407506971864³) is 9849070197066104406964298905645279061410987820544
• The square root of 21435407506971864 is 146408358.7332767827
• The cube root of 21435407506971864 is 277786.1453632419

Scales and comparisons

• 21,435,407,506,971,864 seconds is equal to 681,579,654 years, 33 weeks, 6 days, 15 hours, 44 minutes, 24 seconds.
• To count from 1 to 21,435,407,506,971,864 would take you about two billion, forty-four million, seven hundred thirty-eight thousand, nine hundred sixty-three 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 21435407506971864 cubic inches would be around 23148.8 feet tall.

Recreational maths with 21435407506971864

• 21435407506971864 backwards is 46817960570453412
• 21435407506971864 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21435407506971864's digits is 72
• More coming soon!