1991013880005

Names of 1991013880005

• Cardinal: 1991013880005 can be written as One trillion, nine hundred ninety-one billion, thirteen million, eight hundred eighty thousand and five.

Scientific notation

• Scientific notation: 1.991013880005 × 10¹²

Factors of 1991013880005

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7510

Divisors of 1991013880005

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 9 15 27 45 135 283 849 1415 2547 4245 7219 7641 12735 21657 36095 38205 64971 108285 194913 324855 974565 2042977 6128931 10214885 18386793 30644655 52113961 55160379 91933965 156341883 260569805 275801895 469025649 781709415 1407076947 2345128245 7035384735 14748250963 44244752889 73741254815 132734258667 221223764445 398202776001 663671293335 1991013880005
• Sum of all divisors σ(n): 3552579696960
• Sum of proper divisors (its aliquot sum) s(n): 1561565816955
• 1991013880005 is a deficient number, because the sum of its proper divisors (1561565816955) is less than itself. Its deficiency is 429448063050

Bases of 1991013880005

• Binary: 11100111110010001101011001101000011000101₂
• Hexadecimal: 0x1CF91ACD0C5
• Base-36: PENQ99Z9

Squares and roots of 1991013880005

• 1991013880005 squared (1991013880005²) is 3964136270372564538800025
• 1991013880005 cubed (1991013880005³) is 7892650336543029449298511142041000125
• The square root of 1991013880005 is 1411032.9124457017
• The cube root of 1991013880005 is 12580.3124977767

Scales and comparisons

• 1,991,013,880,005 seconds is equal to 63,308 years, 4 weeks, 2 days, 3 hours, 6 minutes, 45 seconds.
• To count from 1 to 1,991,013,880,005 would take you about one hundred fifty-eight thousand, two hundred seventy 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 1991013880005 cubic inches would be around 1048.4 feet tall.

Recreational maths with 1991013880005

• 1991013880005 backwards is 5000883101991
• 1991013880005 is a Harshad number.
• The number of decimal digits it has is: 13
• The sum of 1991013880005's digits is 45
• More coming soon!