256624161304 has 64 divisors (see below), whose sum is σ = 568397548800. Its totient is φ = 106345180800.

The previous prime is 256624161289. The next prime is 256624161361. The reversal of 256624161304 is 403161426652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435102 + ... + 838189.

It is an arithmetic number, because the mean of its divisors is an integer number (8881211700).

Almost surely, 2^256624161304 is an apocalyptic number.

It is an amenable number.

256624161304 is an abundant number, since it is smaller than the sum of its proper divisors (311773387496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256624161304 is a wasteful number, since it uses less digits than its factorization.

256624161304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273424 (or 1273420 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 256624161304 its reverse (403161426652), we get a palindrome (659785587956).

The spelling of 256624161304 in words is "two hundred fifty-six billion, six hundred twenty-four million, one hundred sixty-one thousand, three hundred four".