256465502567 has 8 divisors (see below), whose sum is σ = 260097431040. Its totient is φ = 252834122520.

The previous prime is 256465502563. The next prime is 256465502569. The reversal of 256465502567 is 765205564652.

256465502567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256465502567 - 2² = 256465502563 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 (256465502563) 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 7 ways as a sum of consecutive naturals, for example, 855278 + ... + 1115540.

It is an arithmetic number, because the mean of its divisors is an integer number (32512178880).

Almost surely, 2^256465502567 is an apocalyptic number.

256465502567 is a deficient number, since it is larger than the sum of its proper divisors (3631928473).

256465502567 is a wasteful number, since it uses less digits than its factorization.

256465502567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274213.

The product of its (nonzero) digits is 15120000, while the sum is 53.

The spelling of 256465502567 in words is "two hundred fifty-six billion, four hundred sixty-five million, five hundred two thousand, five hundred sixty-seven".