256890092122 has 32 divisors (see below), whose sum is σ = 399492000000. Its totient is φ = 123832303296.

The previous prime is 256890092089. The next prime is 256890092141. The reversal of 256890092122 is 221290098652.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296504 + ... + 1481452.

It is an arithmetic number, because the mean of its divisors is an integer number (12484125000).

Almost surely, 2^256890092122 is an apocalyptic number.

256890092122 is a deficient number, since it is larger than the sum of its proper divisors (142601907878).

256890092122 is a wasteful number, since it uses less digits than its factorization.

256890092122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185238.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 256890092122 in words is "two hundred fifty-six billion, eight hundred ninety million, ninety-two thousand, one hundred twenty-two".