256184891022 has 8 divisors (see below), whose sum is σ = 512369782056. Its totient is φ = 85394963672.

The previous prime is 256184891003. The next prime is 256184891051. The reversal of 256184891022 is 220198481652.

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

256184891022 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21348740913 + ... + 21348740924.

It is an arithmetic number, because the mean of its divisors is an integer number (64046222757).

Almost surely, 2^256184891022 is an apocalyptic number.

256184891022 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.

256184891022 is a wasteful number, since it uses less digits than its factorization.

256184891022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42697481842.

The product of its (nonzero) digits is 552960, while the sum is 48.

The spelling of 256184891022 in words is "two hundred fifty-six billion, one hundred eighty-four million, eight hundred ninety-one thousand, twenty-two".