21390798738616064

Names of 21390798738616064

• Cardinal: 21390798738616064 can be written as Twenty-one quadrillion, three hundred ninety trillion, seven hundred ninety-eight billion, seven hundred thirty-eight million, six hundred sixteen thousand and sixty-four.

Scientific notation

• Scientific notation: 2.1390798738616064 × 10¹⁶

Factors of 21390798738616064

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 12616308171

Divisors of 21390798738616064

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 8 16 32 37 64 74 128 148 179 256 296 358 592 716 1184 1432 2368 2864 4736 5728 6623 9472 11456 13246 22912 26492 45824 52984 105968 211936 423872 847744 1695488 12616307953 25232615906 50465231812 100930463624 201860927248 403721854496 466803394261 807443708992 933606788522 1614887417984 1867213577044 2258319123587 3229774835968 3734427154088 4516638247174 7468854308176 9033276494348 14937708616352 18066552988696 29875417232704 36133105977392 59750834465408 72266211954784 83557807572719 119501668930816 144532423909568 167115615145438 289064847819136 334231230290876 578129695638272 668462460581752 1336924921163504 2673849842327008 5347699684654016 10695399369308032 21390798738616064
• Sum of all divisors σ(n): 44097024213138960
• Sum of proper divisors (its aliquot sum) s(n): 22706225474522896
• 21390798738616064 is an abundant number, because the sum of its proper divisors (22706225474522896) is greater than itself. Its abundance is 1315426735906832

Bases of 21390798738616064

• Binary: 1001011111111101101000101110000010001101110111100000000₂
• Hexadecimal: 0x4BFED17046EF00
• Base-36: 5UMELA2WY68

Squares and roots of 21390798738616064

• 21390798738616064 squared (21390798738616064²) is 457566270675978594711833998852096
• 21390798738616064 cubed (21390798738616064³) is 9787708005608979437654638253283459866123665670144
• The square root of 21390798738616064 is 146255935.7380618039
• The cube root of 21390798738616064 is 277593.3132653595

Scales and comparisons

• 21,390,798,738,616,064 seconds is equal to 680,161,233 years, 41 weeks, 5 days, 8 hours, 27 minutes, 44 seconds.
• To count from 1 to 21,390,798,738,616,064 would take you about two billion, forty million, four hundred eighty-three thousand, seven hundred one 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 21390798738616064 cubic inches would be around 23132.8 feet tall.

Recreational maths with 21390798738616064

• 21390798738616064 backwards is 46061683789709312
• The number of decimal digits it has is: 17
• The sum of 21390798738616064's digits is 80
• More coming soon!