256010204403 has 6 divisors (see below), whose sum is σ = 369792517484. Its totient is φ = 170673469596.

The previous prime is 256010204357. The next prime is 256010204459. The reversal of 256010204403 is 304402010652.

256010204403 is a `hidden beast` number, since 2 + 56 + 0 + 1 + 0 + 204 + 403 = 666.

It is not a de Polignac number, because 256010204403 - 2³⁰ = 254936462579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256010204903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14222789125 + ... + 14222789142.

Almost surely, 2^256010204403 is an apocalyptic number.

256010204403 is a deficient number, since it is larger than the sum of its proper divisors (113782313081).

256010204403 is a wasteful number, since it uses less digits than its factorization.

256010204403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28445578273 (or 28445578270 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 256010204403 in words is "two hundred fifty-six billion, ten million, two hundred four thousand, four hundred three".