256660311314 has 16 divisors (see below), whose sum is σ = 420481998720. Its totient is φ = 116527000560.

The previous prime is 256660311293. The next prime is 256660311329. The reversal of 256660311314 is 413113066652.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6819674 + ... + 6857205.

It is an arithmetic number, because the mean of its divisors is an integer number (26280124920).

Almost surely, 2^256660311314 is an apocalyptic number.

256660311314 is a deficient number, since it is larger than the sum of its proper divisors (163821687406).

256660311314 is a wasteful number, since it uses less digits than its factorization.

256660311314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677745.

The product of its (nonzero) digits is 77760, while the sum is 38.

Adding to 256660311314 its reverse (413113066652), we get a palindrome (669773377966).

The spelling of 256660311314 in words is "two hundred fifty-six billion, six hundred sixty million, three hundred eleven thousand, three hundred fourteen".