818825022564 has 12 divisors (see below), whose sum is σ = 1910591719344. Its totient is φ = 272941674184.

The previous prime is 818825022557. The next prime is 818825022581. The reversal of 818825022564 is 465220528818.

818825022564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34117709262 + ... + 34117709285.

It is an arithmetic number, because the mean of its divisors is an integer number (159215976612).

Almost surely, 2^818825022564 is an apocalyptic number.

It is an amenable number.

818825022564 is an abundant number, since it is smaller than the sum of its proper divisors (1091766696780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

818825022564 is a wasteful number, since it uses less digits than its factorization.

818825022564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68235418554 (or 68235418552 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 51.

The spelling of 818825022564 in words is "eight hundred eighteen billion, eight hundred twenty-five million, twenty-two thousand, five hundred sixty-four".