168638395835574090

Names of 168638395835574090

• Cardinal: 168638395835574090 can be written as One hundred sixty-eight quadrillion, six hundred thirty-eight trillion, three hundred ninety-five billion, eight hundred thirty-five million, five hundred seventy-four thousand and ninety.

Scientific notation

• Scientific notation: 1.6863839583557409 × 10¹⁷

Factors of 168638395835574090

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 4809671

Divisors of 168638395835574090

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 243 270 405 486 729 810 1215 1458 2430 3645 7290 4809661 9619322 14428983 24048305 28857966 43286949 48096610 72144915 86573898 129860847 144289830 216434745 259721694 389582541 432869490 649304235 779165082 1168747623 1298608470 1947912705 2337495246 3506242869 3895825410 5843738115 7012485738 11687476230 17531214345 35062428690 23132838934921 46265677869842 69398516804763 115664194674605 138797033609526 208195550414289 231328389349210 346992584023815 416391100828578 624586651242867 693985168047630 1040977752071445 1249173302485734 1873759953728601 2081955504142890 3122933256214335 3747519907457202 5621279861185803 6245866512428670 9368799768643005 11242559722371606 16863839583557409 18737599537286010 28106399305929015 33727679167114818 56212798611858030 84319197917787045 168638395835574090
• Sum of all divisors σ(n): 455115567830925942
• Sum of proper divisors (its aliquot sum) s(n): 286477171995351852
• 168638395835574090 is an abundant number, because the sum of its proper divisors (286477171995351852) is greater than itself. Its abundance is 117838776159777762

Bases of 168638395835574090

• Binary: 1001010111000111111011101000111111010001010110011101001010₂
• Hexadecimal: 0x2571FBA3F45674A
• Base-36: 1A4HBLJI5EMI

Squares and roots of 168638395835574090

• 168638395835574090 squared (168638395835574090²) is 28438908549995772580555159879328100
• 168638395835574090 cubed (168638395835574090³) is 4795891917185879477025767548862613873373586968929000
• The square root of 168638395835574090 is 410656055.3986439027
• The cube root of 168638395835574090 is 552482.8747426429

Scales and comparisons

• 168,638,395,835,574,090 seconds is equal to 5,362,179,354 years, 39 weeks, 4 days, 23 hours, 1 minute, 30 seconds.
• To count from 1 to 168,638,395,835,574,090 would take you about sixteen billion, eighty-six million, five hundred thirty-eight thousand and sixty-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 168638395835574090 cubic inches would be around 46040.2 feet tall.

Recreational maths with 168638395835574090

• 168638395835574090 backwards is 090475538593836861
• 168638395835574090 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 168638395835574090's digits is 90
• More coming soon!