256642242246652 has 48 divisors (see below), whose sum is σ = 459829084190112. Its totient is φ = 125286742031360.

The previous prime is 256642242246629. The next prime is 256642242246671.

256642242246652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83501043 + ... + 86519989.

It is an arithmetic number, because the mean of its divisors is an integer number (9579772587294).

Almost surely, 2^{256642242246652} is an apocalyptic number.

It is an amenable number.

256642242246652 is a deficient number, since it is larger than the sum of its proper divisors (203186841943460).

256642242246652 is a wasteful number, since it uses less digits than its factorization.

256642242246652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3020958 (or 3020956 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 58.

The spelling of 256642242246652 in words is "two hundred fifty-six trillion, six hundred forty-two billion, two hundred forty-two million, two hundred forty-six thousand, six hundred fifty-two".