128085774256 has 20 divisors (see below), whose sum is σ = 270726750504. Its totient is φ = 58220806400.

The previous prime is 128085774221. The next prime is 128085774263. The reversal of 128085774256 is 652477580821.

It is a junction number, because it is equal to n+sod(n) for n = 128085774197 and 128085774206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363879865 + ... + 363880216.

Almost surely, 2^128085774256 is an apocalyptic number.

128085774256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128085774256 is an abundant number, since it is smaller than the sum of its proper divisors (142640976248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128085774256 is a wasteful number, since it uses less digits than its factorization.

128085774256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727760100 (or 727760094 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 55.

The spelling of 128085774256 in words is "one hundred twenty-eight billion, eighty-five million, seven hundred seventy-four thousand, two hundred fifty-six".