128616421169905632

Names of 128616421169905632

• Cardinal: 128616421169905632 can be written as One hundred twenty-eight quadrillion, six hundred sixteen trillion, four hundred twenty-one billion, one hundred sixty-nine million, nine hundred five thousand, six hundred thirty-two.

Scientific notation

• Scientific notation: 1.28616421169905632 × 10¹⁷

Factors of 128616421169905632

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2467319313605

Divisors of 128616421169905632

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 181 288 362 543 724 1086 1448 1629 2172 2896 3258 4344 5792 6516 8688 13032 17376 26064 52128 2467319313419 4934638626838 7401957940257 9869277253676 14803915880514 19738554507352 22205873820771 29607831761028 39477109014704 44411747641542 59215663522056 78954218029408 88823495283084 118431327044112 177646990566168 236862654088224 355293981132336 446584795728839 710587962264672 893169591457678 1339754387186517 1786339182915356 2679508774373034 3572678365830712 4019263161559551 5359017548746068 7145356731661424 8038526323119102 10718035097492136 14290713463322848 16077052646238204 21436070194984272 32154105292476408 42872140389968544 64308210584952816 128616421169905632
• Sum of all divisors σ(n): 367773682219758360
• Sum of proper divisors (its aliquot sum) s(n): 239157261049852728
• 128616421169905632 is an abundant number, because the sum of its proper divisors (239157261049852728) is greater than itself. Its abundance is 110540839879947096

Bases of 128616421169905632

• Binary: 111001000111011111111010000100000000111010011111111100000₂
• Hexadecimal: 0x1C8EFF4201D3FE0
• Base-36: Z6EPS76Z3S0

Squares and roots of 128616421169905632

• 128616421169905632 squared (128616421169905632²) is 16542183794554549620034067785319424
• 128616421169905632 cubed (128616421169905632³) is 2127596477990415653669640608286428805257041056595968
• The square root of 128616421169905632 is 358631316.4935622741
• The cube root of 128616421169905632 is 504776.1268510381

Scales and comparisons

• 128,616,421,169,905,632 seconds is equal to 4,089,604,356 years, 25 weeks, 3 days, 19 hours, 7 minutes, 12 seconds.
• To count from 1 to 128,616,421,169,905,632 would take you about twelve billion, two hundred sixty-eight million, eight hundred thirteen thousand and sixty-nine 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 128616421169905632 cubic inches would be around 42064.7 feet tall.

Recreational maths with 128616421169905632

• 128616421169905632 backwards is 236509961124616821
• 128616421169905632 is a Harshad number.
• The number of decimal digits it has is: 18
• The sum of 128616421169905632's digits is 72
• More coming soon!