12804518256 has 40 divisors (see below), whose sum is σ = 34145385984. Its totient is φ = 4130489280.

The previous prime is 12804518249. The next prime is 12804518281. The reversal of 12804518256 is 65281540821.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4301106 + ... + 4304081.

Almost surely, 2^12804518256 is an apocalyptic number.

12804518256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12804518256 is an abundant number, since it is smaller than the sum of its proper divisors (21340867728).

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

12804518256 is a wasteful number, since it uses less digits than its factorization.

12804518256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8605229 (or 8605223 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 12804518256 in words is "twelve billion, eight hundred four million, five hundred eighteen thousand, two hundred fifty-six".