256428056802 has 8 divisors (see below), whose sum is σ = 512856113616. Its totient is φ = 85476018932.

The previous prime is 256428056791. The next prime is 256428056921. The reversal of 256428056802 is 208650824652.

256428056802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

256428056802 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 21369004728 + ... + 21369004739.

It is an arithmetic number, because the mean of its divisors is an integer number (64107014202).

Almost surely, 2^256428056802 is an apocalyptic number.

256428056802 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256428056802 is a wasteful number, since it uses less digits than its factorization.

256428056802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42738009472.

The product of its (nonzero) digits is 1843200, while the sum is 48.

The spelling of 256428056802 in words is "two hundred fifty-six billion, four hundred twenty-eight million, fifty-six thousand, eight hundred two".