65256533565256 has 32 divisors (see below), whose sum is σ = 135741633775200. Its totient is φ = 29159313917440.

The previous prime is 65256533565217. The next prime is 65256533565323.

It is a happy number.

65256533565256 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6284329705 + ... + 6284340088.

It is an arithmetic number, because the mean of its divisors is an integer number (4241926055475).

Almost surely, 2^{65256533565256} is an apocalyptic number.

It is an amenable number.

65256533565256 is an abundant number, since it is smaller than the sum of its proper divisors (70485100209944).

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

65256533565256 is a wasteful number, since it uses less digits than its factorization.

65256533565256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568669869 (or 12568669865 counting only the distinct ones).

The product of its digits is 729000000, while the sum is 64.

The spelling of 65256533565256 in words is "sixty-five trillion, two hundred fifty-six billion, five hundred thirty-three million, five hundred sixty-five thousand, two hundred fifty-six".