256819775404 has 24 divisors (see below), whose sum is σ = 491222648448. Its totient is φ = 116957771520.

The previous prime is 256819775389. The next prime is 256819775417. The reversal of 256819775404 is 404577918652.

256819775404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256819775404² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60913399 + ... + 60917614.

It is an arithmetic number, because the mean of its divisors is an integer number (20467610352).

Almost surely, 2^256819775404 is an apocalyptic number.

It is an amenable number.

256819775404 is a deficient number, since it is larger than the sum of its proper divisors (234402873044).

256819775404 is a wasteful number, since it uses less digits than its factorization.

256819775404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121831065 (or 121831063 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 58.

The spelling of 256819775404 in words is "two hundred fifty-six billion, eight hundred nineteen million, seven hundred seventy-five thousand, four hundred four".