128201650557321620

Names of 128201650557321620

• Cardinal: 128201650557321620 can be written as One hundred twenty-eight quadrillion, two hundred one trillion, six hundred fifty billion, five hundred fifty-seven million, three hundred twenty-one thousand, six hundred twenty.

Scientific notation

• Scientific notation: 1.2820165055732162 × 10¹⁷

Factors of 128201650557321620

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 438

Divisors of 128201650557321620

• Number of divisors d(n): 42
• Complete list of divisors:
  1 2 4 5 10 20 431 862 1724 2155 4310 8620 185761 371522 743044 928805 1857610 3715220 80062991 160125982 320251964 400314955 800629910 1601259820 34507149121 69014298242 138028596484 172535745605 345071491210 690142982420 14872581271151 29745162542302 59490325084604 74362906355755 148725812711510 297451625423020 6410082527866081 12820165055732162 25640330111464324 32050412639330405 64100825278660810 128201650557321620
• Sum of all divisors σ(n): 269849567254492554
• Sum of proper divisors (its aliquot sum) s(n): 141647916697170934
• 128201650557321620 is an abundant number, because the sum of its proper divisors (141647916697170934) is greater than itself. Its abundance is 13446266139849314

Bases of 128201650557321620

• Binary: 111000111011101101011100011010001000101101000000110010100₂
• Hexadecimal: 0x1C776B8D1168194
• Base-36: Z2BOX7LAW0K

Squares and roots of 128201650557321620

• 128201650557321620 squared (128201650557321620²) is 16435663205621602839953388119424400
• 128201650557321620 cubed (128201650557321620³) is 2107079150964929203258135081760028121466360075528000
• The square root of 128201650557321620 is 358052580.7159077297
• The cube root of 128201650557321620 is 504232.9308762863
• Being both a perfect square and a perfect cube, 128201650557321620 is also a perfect sixth number.

Scales and comparisons

• 128,201,650,557,321,620 seconds is equal to 4,076,415,933 years, 51 weeks, 20 seconds.
• To count from 1 to 128,201,650,557,321,620 would take you about twelve billion, two hundred twenty-nine million, two hundred forty-seven thousand, eight 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 128201650557321620 cubic inches would be around 42019.4 feet tall.

Recreational maths with 128201650557321620

• 128201650557321620 backwards is 026123755056102821
• The number of decimal digits it has is: 18
• The sum of 128201650557321620's digits is 56
• More coming soon!