256682012263 has 4 divisors (see below), whose sum is σ = 256684580208. Its totient is φ = 256679444320.

The previous prime is 256682012261. The next prime is 256682012273. The reversal of 256682012263 is 362210286652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256682012263 - 2¹ = 256682012261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256682012261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127698 + ... + 1336063.

It is an arithmetic number, because the mean of its divisors is an integer number (64171145052).

Almost surely, 2^256682012263 is an apocalyptic number.

256682012263 is a deficient number, since it is larger than the sum of its proper divisors (2567945).

256682012263 is a wasteful number, since it uses less digits than its factorization.

256682012263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567944.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 256682012263 in words is "two hundred fifty-six billion, six hundred eighty-two million, twelve thousand, two hundred sixty-three".