256700358890 has 16 divisors (see below), whose sum is σ = 462147873408. Its totient is φ = 102660759696.

The previous prime is 256700358851. The next prime is 256700358913. The reversal of 256700358890 is 98853007652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367302 + ... + 2473361.

It is an arithmetic number, because the mean of its divisors is an integer number (28884242088).

Almost surely, 2^256700358890 is an apocalyptic number.

256700358890 is a deficient number, since it is larger than the sum of its proper divisors (205447514518).

256700358890 is a wasteful number, since it uses less digits than its factorization.

256700358890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845973.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 256700358890 in words is "two hundred fifty-six billion, seven hundred million, three hundred fifty-eight thousand, eight hundred ninety".