81677919321

Names of 81677919321

• Cardinal: 81677919321 can be written as Eighty-one billion, six hundred seventy-seven million, nine hundred nineteen thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 8.1677919321 × 10¹⁰

Factors of 81677919321

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1310

Divisors of 81677919321

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 9 19 27 31 37 57 93 111 127 171 279 333 381 513 589 703 837 999 1093 1143 1147 1767 2109 2413 3279 3429 3441 3937 4699 5301 6327 7239 9837 10323 11811 14097 15903 18981 20767 21717 21793 29511 30969 33883 35433 40441 42291 62301 65151 65379 74803 89281 101649 106299 121323 126873 138811 145669 186903 196137 224409 267843 304947 363969 416433 437007 560709 588411 643777 673227 768379 803529 914841 1091907 1249299 1253671 1311021 1931331 2019681 2305137 2410587 2637409 2767711 3747897 3761013 3933063 4303141 5136007 5793993 6915411 7912227 8303133 11283039 12909423 15408021 17381979 20746233 23736681 23819749 24909399 33849117 38728269 46224063 71210043 71459247 74728197 81759679 97584133 116184807 138672189 159216217 214377741 245279037 292752399 477648651 643133223 735837111 878257197 1432945953 2207511333 2634771591 3025108123 4298837859 9075324369 27225973107 81677919321
• Sum of all divisors σ(n): 136223129600
• Sum of proper divisors (its aliquot sum) s(n): 54545210279
• 81677919321 is a deficient number, because the sum of its proper divisors (54545210279) is less than itself. Its deficiency is 27132709042

Bases of 81677919321

• Binary: 1001100000100011000100010010001011001₂
• Hexadecimal: 0x1304622459
• Base-36: 11ISX9W9

Squares and roots of 81677919321

• 81677919321 squared (81677919321²) is 6671282504607785101041
• 81677919321 cubed (81677919321³) is 544896474178953482231332631113161
• The square root of 81677919321 is 285793.4906903935
• The cube root of 81677919321 is 4338.7859183565

Scales and comparisons

• 81,677,919,321 seconds is equal to 2,597 years, 5 weeks, 3 days, 6 hours, 55 minutes, 21 seconds.
• To count from 1 to 81,677,919,321 would take you about five thousand, one hundred ninety-four 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 81677919321 cubic inches would be around 361.6 feet tall.

Recreational maths with 81677919321

• 81677919321 backwards is 12391977618
• The number of decimal digits it has is: 11
• The sum of 81677919321's digits is 54
• More coming soon!