256932012945 has 16 divisors (see below), whose sum is σ = 411599387520. Its totient is φ = 136861017984.

The previous prime is 256932012881. The next prime is 256932012947. The reversal of 256932012945 is 549210239652.

It is not a de Polignac number, because 256932012945 - 2⁶ = 256932012881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256932012894 and 256932012903.

It is not an unprimeable number, because it can be changed into a prime (256932012947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10574269 + ... + 10598538.

It is an arithmetic number, because the mean of its divisors is an integer number (25724961720).

Almost surely, 2^256932012945 is an apocalyptic number.

It is an amenable number.

256932012945 is a deficient number, since it is larger than the sum of its proper divisors (154667374575).

256932012945 is a wasteful number, since it uses less digits than its factorization.

256932012945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21173624.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 256932012945 in words is "two hundred fifty-six billion, nine hundred thirty-two million, twelve thousand, nine hundred forty-five".