161818671664

Names of 161818671664

• Cardinal: 161818671664 can be written as One hundred sixty-one billion, eight hundred eighteen million, six hundred seventy-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 1.61818671664 × 10¹¹

Factors of 161818671664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 579392

Divisors of 161818671664

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 13 16 17 26 34 52 68 79 104 136 158 208 221 272 316 442 632 884 1027 1264 1343 1768 2054 2686 3536 4108 5372 8216 10744 16432 17459 21488 34918 69836 139672 279344 579281 1158562 2317124 4634248 7530653 9268496 9847777 15061306 19695554 30122612 39391108 45763199 60245224 78782216 91526398 120490448 128021101 157564432 183052796 256042202 366105592 512084404 594921587 732211184 777974383 1024168808 1189843174 1555948766 2048337616 2379686348 3111897532 4759372696 6223795064 9518745392 10113666979 12447590128 20227333958 40454667916 80909335832 161818671664
• Sum of all divisors σ(n): 362028078720
• Sum of proper divisors (its aliquot sum) s(n): 200209407056
• 161818671664 is an abundant number, because the sum of its proper divisors (200209407056) is greater than itself. Its abundance is 38390735392

Bases of 161818671664

• Binary: 10010110101101001001001111101000110000₂
• Hexadecimal: 0x25AD24FA30
• Base-36: 22C6NQ5S

Squares and roots of 161818671664

• 161818671664 squared (161818671664²) is 26185282499101436528896
• 161818671664 cubed (161818671664³) is 4237267631151180732700157672402944
• The square root of 161818671664 is 402266.9159451221
• The cube root of 161818671664 is 5449.3270966085

Scales and comparisons

• 161,818,671,664 seconds is equal to 5,145 years, 17 weeks, 2 days, 7 hours, 1 minute, 4 seconds.
• To count from 1 to 161,818,671,664 would take you about ten thousand, two hundred ninety 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 161818671664 cubic inches would be around 454.1 feet tall.

Recreational maths with 161818671664

• 161818671664 backwards is 466176818161
• The number of decimal digits it has is: 12
• The sum of 161818671664's digits is 55
• More coming soon!