256234804818 has 32 divisors (see below), whose sum is σ = 522690201600. Its totient is φ = 83723726736.

The previous prime is 256234804817. The next prime is 256234804927. The reversal of 256234804818 is 818408432652.

256234804818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256234804811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1878646 + ... + 2010417.

It is an arithmetic number, because the mean of its divisors is an integer number (16334068800).

Almost surely, 2^256234804818 is an apocalyptic number.

256234804818 is an abundant number, since it is smaller than the sum of its proper divisors (266455396782).

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

256234804818 is a wasteful number, since it uses less digits than its factorization.

256234804818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889286.

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 256234804818 in words is "two hundred fifty-six billion, two hundred thirty-four million, eight hundred four thousand, eight hundred eighteen".