256632636514 has 64 divisors (see below), whose sum is σ = 434839145472. Its totient is φ = 112935961600.

The previous prime is 256632636457. The next prime is 256632636529. The reversal of 256632636514 is 415636236652.

256632636514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 38992704 + ... + 38999284.

It is an arithmetic number, because the mean of its divisors is an integer number (6794361648).

Almost surely, 2^256632636514 is an apocalyptic number.

256632636514 is a deficient number, since it is larger than the sum of its proper divisors (178206508958).

256632636514 is a wasteful number, since it uses less digits than its factorization.

256632636514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731.

The product of its digits is 4665600, while the sum is 49.

The spelling of 256632636514 in words is "two hundred fifty-six billion, six hundred thirty-two million, six hundred thirty-six thousand, five hundred fourteen".