256103644670 has 16 divisors (see below), whose sum is σ = 461771897328. Its totient is φ = 102266938560.

The previous prime is 256103644631. The next prime is 256103644721. The reversal of 256103644670 is 76446301652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21808751 + ... + 21820490.

It is an arithmetic number, because the mean of its divisors is an integer number (28860743583).

Almost surely, 2^256103644670 is an apocalyptic number.

256103644670 is a deficient number, since it is larger than the sum of its proper divisors (205668252658).

256103644670 is a wasteful number, since it uses less digits than its factorization.

256103644670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43629835.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 256103644670 in words is "two hundred fifty-six billion, one hundred three million, six hundred forty-four thousand, six hundred seventy".