256514345564 has 6 divisors (see below), whose sum is σ = 448900104744. Its totient is φ = 128257172780.

The previous prime is 256514345557. The next prime is 256514345599. The reversal of 256514345564 is 465543415652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32064293192 + ... + 32064293199.

It is an arithmetic number, because the mean of its divisors is an integer number (74816684124).

Almost surely, 2^256514345564 is an apocalyptic number.

It is an amenable number.

256514345564 is a deficient number, since it is larger than the sum of its proper divisors (192385759180).

256514345564 is a wasteful number, since it uses less digits than its factorization.

256514345564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64128586395 (or 64128586393 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 50.

The spelling of 256514345564 in words is "two hundred fifty-six billion, five hundred fourteen million, three hundred forty-five thousand, five hundred sixty-four".