256799055958 has 16 divisors (see below), whose sum is σ = 403474680576. Its totient is φ = 122349949480.

The previous prime is 256799055949. The next prime is 256799056021. The reversal of 256799055958 is 859550997652.

It is a happy number.

256799055958 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10601188 + ... + 10625383.

It is an arithmetic number, because the mean of its divisors is an integer number (25217167536).

Almost surely, 2^256799055958 is an apocalyptic number.

256799055958 is a deficient number, since it is larger than the sum of its proper divisors (146675624618).

256799055958 is a wasteful number, since it uses less digits than its factorization.

256799055958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21226859.

The product of its (nonzero) digits is 306180000, while the sum is 70.

The spelling of 256799055958 in words is "two hundred fifty-six billion, seven hundred ninety-nine million, fifty-five thousand, nine hundred fifty-eight".