16721732745

Names of 16721732745

• Cardinal: 16721732745 can be written as Sixteen billion, seven hundred twenty-one million, seven hundred thirty-two thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 1.6721732745 × 10¹⁰

Factors of 16721732745

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 13958

Divisors of 16721732745

• Number of divisors d(n): 56
• Complete list of divisors:
  1 3 5 9 15 27 45 81 135 243 337 405 729 1011 1215 1685 3033 3645 5055 9099 13613 15165 27297 40839 45495 68065 81891 122517 136485 204195 245673 367551 409455 612585 1102653 1228365 1837755 3307959 4587581 5513265 9923877 13762743 16539795 22937905 41288229 49619385 68813715 123864687 206441145 371594061 619323435 1114782183 1857970305 3344346549 5573910915 16721732745
• Sum of all divisors σ(n): 30176846856
• Sum of proper divisors (its aliquot sum) s(n): 13455114111
• 16721732745 is a deficient number, because the sum of its proper divisors (13455114111) is less than itself. Its deficiency is 3266618634

Bases of 16721732745

• Binary: 1111100100101100010110010010001001₂
• Hexadecimal: 0x3E4B16489
• Base-36: 7OJORK9

Squares and roots of 16721732745

• 16721732745 squared (16721732745²) is 279616345995205235025
• 16721732745 cubed (16721732745³) is 4675669808865272991512963393625
• The square root of 16721732745 is 129312.5390091773
• The cube root of 16721732745 is 2557.1748591225

Scales and comparisons

• 16,721,732,745 seconds is equal to 531 years, 36 weeks, 2 days, 13 hours, 45 minutes, 45 seconds.
• To count from 1 to 16,721,732,745 would take you about one thousand and 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 16721732745 cubic inches would be around 213.1 feet tall.

Recreational maths with 16721732745

• 16721732745 backwards is 54723712761
• 16721732745 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 16721732745's digits is 45
• More coming soon!