256316838603 has 16 divisors (see below), whose sum is σ = 391625177856. Its totient is φ = 146074088160.

The previous prime is 256316838563. The next prime is 256316838641. The reversal of 256316838603 is 306838613652.

It is a happy number.

It is not a de Polignac number, because 256316838603 - 2⁶ = 256316838539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256316838103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16353513 + ... + 16369178.

It is an arithmetic number, because the mean of its divisors is an integer number (24476573616).

Almost surely, 2^256316838603 is an apocalyptic number.

256316838603 is a deficient number, since it is larger than the sum of its proper divisors (135308339253).

256316838603 is a wasteful number, since it uses less digits than its factorization.

256316838603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32723074.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 256316838603 in words is "two hundred fifty-six billion, three hundred sixteen million, eight hundred thirty-eight thousand, six hundred three".