21387108674020005

Names of 21387108674020005

• Cardinal: 21387108674020005 can be written as Twenty-one quadrillion, three hundred eighty-seven trillion, one hundred eight billion, six hundred seventy-four million, twenty thousand and five.

Scientific notation

• Scientific notation: 2.1387108674020005 × 10¹⁶

Factors of 21387108674020005

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1038142

Divisors of 21387108674020005

• Number of divisors d(n): 90
• Complete list of divisors:
  1 3 5 7 9 15 21 27 35 45 49 63 81 105 135 147 189 245 315 405 441 567 735 945 1323 2205 2835 3969 6615 19845 1038127 3114381 5190635 7266889 9343143 15571905 21800667 28029429 36334445 46715715 50868223 65402001 84088287 109003335 140147145 152604669 196206003 254341115 327010005 420441435 457814007 588618009 763023345 981030015 1373442021 2289070035 2943090045 4120326063 6867210105 20601630315 1077707668129 3233123004387 5388538340645 7543953676903 9699369013161 16165615021935 22631861030709 29098107039483 37719768384515 48496845065805 52807675738321 67895583092127 87294321118449 113159305153545 145490535197415 158423027214963 203686749276381 264038378691605 339477915460635 436471605592245 475269081644889 611060247829143 792115136074815 1018433746381905 1425807244934667 2376345408224445 3055301239145715 4277421734804001 7129036224673335 21387108674020005
• Sum of all divisors σ(n): 44597741682327174
• Sum of proper divisors (its aliquot sum) s(n): 23210633008307169
• 21387108674020005 is an abundant number, because the sum of its proper divisors (23210633008307169) is greater than itself. Its abundance is 1823524334287164

Bases of 21387108674020005

• Binary: 1001011111110110111011001000111010010011010001010100101₂
• Hexadecimal: 0x4BFB764749A2A5
• Base-36: 5UL3I35Q9B9

Squares and roots of 21387108674020005

• 21387108674020005 squared (21387108674020005²) is 457408417434341736494047140200025
• 21387108674020005 cubed (21387108674020005³) is 9782643532079773433442831947975412185556551500125
• The square root of 21387108674020005 is 146243320.1005092233
• The cube root of 21387108674020005 is 277577.3500751835

Scales and comparisons

• 21,387,108,674,020,005 seconds is equal to 680,043,901 years, 8 weeks, 3 days, 9 hours, 6 minutes, 45 seconds.
• To count from 1 to 21,387,108,674,020,005 would take you about two billion, forty million, one hundred thirty-one thousand, seven hundred three 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 21387108674020005 cubic inches would be around 23131.4 feet tall.

Recreational maths with 21387108674020005

• 21387108674020005 backwards is 50002047680178312
• The number of decimal digits it has is: 17
• The sum of 21387108674020005's digits is 54
• More coming soon!