256534660156304 has 20 divisors (see below), whose sum is σ = 497109094648320. Its totient is φ = 128248442182560.

The previous prime is 256534660156289. The next prime is 256534660156309. The reversal of 256534660156304 is 403651066435652.

It is a self number, because there is not a number n which added to its sum of digits gives 256534660156304.

It is not an unprimeable number, because it can be changed into a prime (256534660156309) 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, 1180381424 + ... + 1180598735.

It is an arithmetic number, because the mean of its divisors is an integer number (24855454732416).

Almost surely, 2^{256534660156304} is an apocalyptic number.

It is an amenable number.

256534660156304 is a deficient number, since it is larger than the sum of its proper divisors (240574434492016).

256534660156304 is a wasteful number, since it uses less digits than its factorization.

256534660156304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360986958 (or 2360986952 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 256534660156304 in words is "two hundred fifty-six trillion, five hundred thirty-four billion, six hundred sixty million, one hundred fifty-six thousand, three hundred four".