256622440712636 has 12 divisors (see below), whose sum is σ = 454499985359112. Its totient is φ = 126765302038608.

The previous prime is 256622440712569. The next prime is 256622440712641. The reversal of 256622440712636 is 636217044226652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386479579055 + ... + 386479579718.

It is an arithmetic number, because the mean of its divisors is an integer number (37874998779926).

Almost surely, 2^{256622440712636} is an apocalyptic number.

It is an amenable number.

256622440712636 is a deficient number, since it is larger than the sum of its proper divisors (197877544646476).

256622440712636 is a wasteful number, since it uses less digits than its factorization.

256622440712636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772959158860 (or 772959158858 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 56.

The spelling of 256622440712636 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, four hundred forty million, seven hundred twelve thousand, six hundred thirty-six".