256226661424 has 20 divisors (see below), whose sum is σ = 507984254536. Its totient is φ = 125133950592.

The previous prime is 256226661349. The next prime is 256226661461. The reversal of 256226661424 is 424166622652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186210549 + ... + 186211924.

Almost surely, 2^256226661424 is an apocalyptic number.

It is an amenable number.

256226661424 is a deficient number, since it is larger than the sum of its proper divisors (251757593112).

256226661424 is a wasteful number, since it uses less digits than its factorization.

256226661424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372422524 (or 372422518 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The spelling of 256226661424 in words is "two hundred fifty-six billion, two hundred twenty-six million, six hundred sixty-one thousand, four hundred twenty-four".