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128689283359 = 7132361485563
BaseRepresentation
bin111011111011001111…
…0101010000100011111
3110022011120120221102001
41313312132222010133
54102023424031414
6135041413543131
712204016601020
oct1676636520437
9408146527361
10128689283359
114a63882233a
1220b35944aa7
13c19b486a60
14632b398c47
153532c58074
hex1df67aa11f

128689283359 has 16 divisors (see below), whose sum is σ = 165273196032. Its totient is φ = 97393130208.

The previous prime is 128689283357. The next prime is 128689283383. The reversal of 128689283359 is 953382986821.

It is a cyclic number.

It is not a de Polignac number, because 128689283359 - 21 = 128689283357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128689283359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128689283353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30740689 + ... + 30744874.

It is an arithmetic number, because the mean of its divisors is an integer number (10329574752).

Almost surely, 2128689283359 is an apocalyptic number.

128689283359 is a deficient number, since it is larger than the sum of its proper divisors (36583912673).

128689283359 is a wasteful number, since it uses less digits than its factorization.

128689283359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61485606.

The product of its digits is 44789760, while the sum is 64.

The spelling of 128689283359 in words is "one hundred twenty-eight billion, six hundred eighty-nine million, two hundred eighty-three thousand, three hundred fifty-nine".

Divisors: 1 7 13 23 91 161 299 2093 61485563 430398941 799312319 1414167949 5595186233 9899175643 18384183337 128689283359