78978766381255321

Names of 78978766381255321

• Cardinal: 78978766381255321 can be written as Seventy-eight quadrillion, nine hundred seventy-eight trillion, seven hundred sixty-six billion, three hundred eighty-one million, two hundred fifty-five thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 7.8978766381255321 × 10¹⁶

Factors of 78978766381255321

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 186

Divisors of 78978766381255321

• Number of divisors d(n): 35
• Complete list of divisors:
  1 7 49 179 343 1253 2401 8771 32041 61397 224287 429779 1570009 5735339 10990063 40147373 76930441 281031611 1026625681 1967221277 7186379767 13770548939 50304658369 183765996899 352132608583 1286361978293 2464928260081 9004533848051 32894113444921 63031736936357 230258794114447 441222158554499 1611811558801129 11282680911607903 78978766381255321
• Sum of all divisors σ(n): 92654032050005861
• Sum of proper divisors (its aliquot sum) s(n): 13675265668750540
• 78978766381255321 is a deficient number, because the sum of its proper divisors (13675265668750540) is less than itself. Its deficiency is 65303500712504781

Bases of 78978766381255321

• Binary: 100011000100101101100010100000010111101000000101010011001₂
• Hexadecimal: 0x11896C502F40A99
• Base-36: LLNMWE42W0P

Squares and roots of 78978766381255321

• 78978766381255321 squared (78978766381255321²) is 6237645539104905712383391790813041
• 78978766381255321 cubed (78978766381255321³) is 492641549802045750006050082582407827162596797441161
• 78978766381255321 is a perfect square number. Its square root is 281031611
• The cube root of 78978766381255321 is 429045.5961904709
• Being both a perfect square and a perfect cube, 78978766381255321 is also a perfect sixth number.

Scales and comparisons

• 78,978,766,381,255,321 seconds is equal to 2,511,280,473 years, 29 weeks, 15 hours, 22 minutes, 1 second.
• To count from 1 to 78,978,766,381,255,321 would take you about seven billion, five hundred thirty-three million, eight hundred forty-one thousand, four hundred twenty 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 78978766381255321 cubic inches would be around 35753.8 feet tall.

Recreational maths with 78978766381255321

• 78978766381255321 backwards is 12355218366787987
• The number of decimal digits it has is: 17
• The sum of 78978766381255321's digits is 88
• More coming soon!