989720471831547681

Names of 989720471831547681

• Cardinal: 989720471831547681 can be written as Nine hundred eighty-nine quadrillion, seven hundred twenty trillion, four hundred seventy-one billion, eight hundred thirty-one million, five hundred forty-seven thousand, six hundred eighty-one.

Scientific notation

• Scientific notation: 9.89720471831547681 × 10¹⁷

Factors of 989720471831547681

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1556955

Divisors of 989720471831547681

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 71 81 213 639 1917 5041 5751 15123 45369 136107 408321 1556881 4670643 14011929 42035787 110538551 126107361 331615653 994846959 2984540877 7848237121 8953622631 23544711363 70634134089 211902402267 635707206801 2423878448161 7271635344483 21814906033449 65444718100347 172095369819431 196334154301041 516286109458293 1548858328374879 4646574985124637 12218771257179601 13939724955373911 36656313771538803 109968941314616409 329906823943849227 989720471831547681
• Sum of all divisors σ(n): 1499589114359967939
• Sum of proper divisors (its aliquot sum) s(n): 509868642528420258
• 989720471831547681 is a deficient number, because the sum of its proper divisors (509868642528420258) is less than itself. Its deficiency is 479851829303127423

Bases of 989720471831547681

• Binary: 110110111100001100011000011001111110011100111000111100100001₂
• Hexadecimal: 0xDBC31867E738F21
• Base-36: 7IP6MJY76L29

Squares and roots of 989720471831547681

• 989720471831547681 squared (989720471831547681²) is 979546612362461366688027047776477761
• 989720471831547681 cubed (989720471831547681³) is 969477335368369400499188520707594614381751719507622241
• 989720471831547681 is a perfect square number. Its square root is 994846959
• The cube root of 989720471831547681 is 996561.6821300397

Scales and comparisons

• 989,720,471,831,547,681 seconds is equal to 31,470,049,597 years, 42 weeks, 3 days, 21 hours, 1 minute, 21 seconds.
• To count from 1 to 989,720,471,831,547,681 would take you about ninety-four billion, four hundred ten million, one hundred forty-eight thousand, seven hundred ninety-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 989720471831547681 cubic inches would be around 83046.8 feet tall.

Recreational maths with 989720471831547681

• 989720471831547681 backwards is 186745138174027989
• The number of decimal digits it has is: 18
• The sum of 989720471831547681's digits is 90
• More coming soon!