81801397132

Names of 81801397132

• Cardinal: 81801397132 can be written as Eighty-one billion, eight hundred one million, three hundred ninety-seven thousand, one hundred thirty-two.

Scientific notation

• Scientific notation: 8.1801397132 × 10¹⁰

Factors of 81801397132

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 19239

Divisors of 81801397132

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 13 14 23 26 28 46 49 52 73 91 92 98 146 161 182 196 292 299 322 364 511 598 637 644 949 1022 1127 1196 1274 1679 1898 2044 2093 2254 2548 3358 3577 3796 4186 4508 6643 6716 7154 8372 11753 13286 14308 14651 19121 21827 23506 26572 29302 38242 43654 46501 47012 58604 76484 82271 87308 93002 133847 152789 164542 186004 248573 267694 305578 329084 439783 497146 535388 611156 879566 936929 994292 1069523 1395833 1740011 1759132 1873858 2139046 2791666 3078481 3480022 3747716 4278092 5583332 5717179 6156962 6960044 9770831 11434358 12180077 12313924 18145829 19541662 21549367 22868716 24360154 32104159 36291658 39083324 40020253 43098734 48720308 64208318 68395817 72583316 80040506 86197468 127020803 128416636 136791634 160081012 224729113 254041606 273583268 280141771 417354067 449458226 508083212 560283542 834708134 889145621 898916452 1120567084 1573103791 1669416268 1778291242 2921478469 3146207582 3556582484 5842956938 6292415164 11685913876 20450349283 40900698566 81801397132
• Sum of all divisors σ(n): 189704313792
• Sum of proper divisors (its aliquot sum) s(n): 107902916660
• 81801397132 is an abundant number, because the sum of its proper divisors (107902916660) is greater than itself. Its abundance is 26101519528

Bases of 81801397132

• Binary: 1001100001011101111100100001110001100₂
• Hexadecimal: 0x130BBE438C
• Base-36: 11KUFTZG

Squares and roots of 81801397132

• 81801397132 squared (81801397132²) is 6691468572747177825424
• 81801397132 cubed (81801397132³) is 547371478115589125529732790283968
• The square root of 81801397132 is 286009.4353898137
• The cube root of 81801397132 is 4340.9712255797

Scales and comparisons

• 81,801,397,132 seconds is equal to 2,601 years, 1 week, 4 days, 10 hours, 18 minutes, 52 seconds.
• To count from 1 to 81,801,397,132 would take you about five thousand, two hundred two 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 81801397132 cubic inches would be around 361.7 feet tall.

Recreational maths with 81801397132

• 81801397132 backwards is 23179310818
• The number of decimal digits it has is: 11
• The sum of 81801397132's digits is 43
• More coming soon!