81677990900

Names of 81677990900

• Cardinal: 81677990900 can be written as Eighty-one billion, six hundred seventy-seven million, nine hundred ninety thousand, nine hundred.

Scientific notation

• Scientific notation: 8.16779909 × 10¹⁰

Factors of 81677990900

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 140963

Divisors of 81677990900

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 11 17 20 22 25 31 34 44 50 55 62 68 85 100 110 124 155 170 187 220 275 310 340 341 374 425 527 550 620 682 748 775 850 935 1054 1100 1364 1550 1700 1705 1870 2108 2635 3100 3410 3740 4675 5270 5797 6820 8525 9350 10540 11594 13175 17050 18700 23188 26350 28985 34100 52700 57970 115940 140897 144925 281794 289850 563588 579700 704485 1408970 1549867 2395249 2817940 3099734 3522425 4367807 4790498 6199468 7044850 7749335 8735614 9580996 11976245 14089700 15498670 17471228 21839035 23952490 26347739 30997340 38746675 43678070 47904980 48045877 52695478 59881225 74252719 77493350 87356140 96091754 105390956 109195175 119762450 131738695 148505438 154986700 192183508 218390350 239524900 240229385 263477390 297010876 371263595 436780700 480458770 526954780 658693475 742527190 816779909 960917540 1201146925 1317386950 1485054380 1633559818 1856317975 2402293850 2634773900 3267119636 3712635950 4083899545 4804587700 7425271900 8167799090 16335598180 20419497725 40838995450 81677990900
• Sum of all divisors σ(n): 211333473792
• Sum of proper divisors (its aliquot sum) s(n): 129655482892
• 81677990900 is an abundant number, because the sum of its proper divisors (129655482892) is greater than itself. Its abundance is 47977491992

Bases of 81677990900

• Binary: 1001100000100011000110011101111110100₂
• Hexadecimal: 0x1304633BF4
• Base-36: 11ISYT4K

Squares and roots of 81677990900

• 81677990900 squared (81677990900²) is 6671294197460482810000
• 81677990900 cubed (81677990900³) is 544897906751400118064786429000000
• The square root of 81677990900 is 285793.6159189005
• The cube root of 81677990900 is 4338.7871857975

Scales and comparisons

• 81,677,990,900 seconds is equal to 2,597 years, 5 weeks, 4 days, 2 hours, 48 minutes, 20 seconds.
• To count from 1 to 81,677,990,900 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 81677990900 cubic inches would be around 361.6 feet tall.

Recreational maths with 81677990900

• 81677990900 backwards is 00909977618
• The number of decimal digits it has is: 11
• The sum of 81677990900's digits is 56
• More coming soon!