256626475764 has 24 divisors (see below), whose sum is σ = 600259168320. Its totient is φ = 85333007424.

The previous prime is 256626475753. The next prime is 256626475783. The reversal of 256626475764 is 467574626652.

It is a junction number, because it is equal to n+sod(n) for n = 256626475698 and 256626475707.

It is a congruent number.

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, 26138784 + ... + 26148599.

It is an arithmetic number, because the mean of its divisors is an integer number (25010798680).

Almost surely, 2^256626475764 is an apocalyptic number.

It is an amenable number.

256626475764 is an abundant number, since it is smaller than the sum of its proper divisors (343632692556).

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

256626475764 is a wasteful number, since it uses less digits than its factorization.

256626475764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52287799 (or 52287797 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 60.

The spelling of 256626475764 in words is "two hundred fifty-six billion, six hundred twenty-six million, four hundred seventy-five thousand, seven hundred sixty-four".