256974860603 has 4 divisors (see below), whose sum is σ = 257402440008. Its totient is φ = 256547281200.

The previous prime is 256974860563. The next prime is 256974860609. The reversal of 256974860603 is 306068479652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256974860603 - 2³⁶ = 188255383867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256974860609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213788801 + ... + 213790002.

It is an arithmetic number, because the mean of its divisors is an integer number (64350610002).

Almost surely, 2^256974860603 is an apocalyptic number.

256974860603 is a deficient number, since it is larger than the sum of its proper divisors (427579405).

256974860603 is an equidigital number, since it uses as much as digits as its factorization.

256974860603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427579404.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 256974860603 in words is "two hundred fifty-six billion, nine hundred seventy-four million, eight hundred sixty thousand, six hundred three".