256349887852 has 6 divisors (see below), whose sum is σ = 448612303748. Its totient is φ = 128174943924.

The previous prime is 256349887819. The next prime is 256349887949. The reversal of 256349887852 is 258788943652.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32043735978 + ... + 32043735985.

Almost surely, 2^256349887852 is an apocalyptic number.

It is an amenable number.

256349887852 is a deficient number, since it is larger than the sum of its proper divisors (192262415896).

256349887852 is a wasteful number, since it uses less digits than its factorization.

256349887852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64087471967 (or 64087471965 counting only the distinct ones).

The product of its digits is 232243200, while the sum is 67.

The spelling of 256349887852 in words is "two hundred fifty-six billion, three hundred forty-nine million, eight hundred eighty-seven thousand, eight hundred fifty-two".