161091375872

Names of 161091375872

• Cardinal: 161091375872 can be written as One hundred sixty-one billion, ninety-one million, three hundred seventy-five thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 1.61091375872 × 10¹¹

Factors of 161091375872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 3908499

Divisors of 161091375872

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 8 14 16 23 28 32 46 56 64 92 112 128 161 184 224 256 322 368 448 644 736 896 1288 1472 1792 2576 2944 5152 5888 10304 20608 41216 3908467 7816934 15633868 27359269 31267736 54718538 62535472 89894741 109437076 125070944 179789482 218874152 250141888 359578964 437748304 500283776 629263187 719157928 875496608 1000567552 1258526374 1438315856 1750993216 2517052748 2876631712 3501986432 5034105496 5753263424 7003972864 10068210992 11506526848 20136421984 23013053696 40272843968 80545687936 161091375872
• Sum of all divisors σ(n): 383467612416
• Sum of proper divisors (its aliquot sum) s(n): 222376236544
• 161091375872 is an abundant number, because the sum of its proper divisors (222376236544) is greater than itself. Its abundance is 61284860672

Bases of 161091375872

• Binary: 10010110000001110010110101001100000000₂
• Hexadecimal: 0x2581CB5300
• Base-36: 2205N94W

Squares and roots of 161091375872

• 161091375872 squared (161091375872²) is 25950431380333983760384
• 161091375872 cubed (161091375872³) is 4180390695529925566839162927054848
• The square root of 161091375872 is 401361.9013708201
• The cube root of 161091375872 is 5441.1508147785

Scales and comparisons

• 161,091,375,872 seconds is equal to 5,122 years, 10 weeks, 5 days, 12 hours, 24 minutes, 32 seconds.
• To count from 1 to 161,091,375,872 would take you about ten thousand, two hundred forty-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 161091375872 cubic inches would be around 453.4 feet tall.

Recreational maths with 161091375872

• 161091375872 backwards is 278573190161
• The number of decimal digits it has is: 12
• The sum of 161091375872's digits is 50
• More coming soon!