256502177996 has 12 divisors (see below), whose sum is σ = 448888836480. Its totient is φ = 128248224720.

The previous prime is 256502177993. The next prime is 256502178011. The reversal of 256502177996 is 699771205652.

It is a happy number.

256502177996 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256502177993) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 507851 + ... + 878018.

It is an arithmetic number, because the mean of its divisors is an integer number (37407403040).

Almost surely, 2^256502177996 is an apocalyptic number.

It is an amenable number.

256502177996 is a deficient number, since it is larger than the sum of its proper divisors (192386658484).

256502177996 is a wasteful number, since it uses less digits than its factorization.

256502177996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432144 (or 1432142 counting only the distinct ones).

The product of its (nonzero) digits is 14288400, while the sum is 59.

The spelling of 256502177996 in words is "two hundred fifty-six billion, five hundred two million, one hundred seventy-seven thousand, nine hundred ninety-six".