23581578966 has 48 divisors (see below), whose sum is σ = 53785045440. Its totient is φ = 6835230160.

The previous prime is 23581578953. The next prime is 23581578973. The reversal of 23581578966 is 66987518532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302796 + ... + 372623.

It is an arithmetic number, because the mean of its divisors is an integer number (1120521780).

Almost surely, 2^23581578966 is an apocalyptic number.

23581578966 is an abundant number, since it is smaller than the sum of its proper divisors (30203466474).

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

23581578966 is a wasteful number, since it uses less digits than its factorization.

23581578966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675481 (or 675458 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 23581578966 in words is "twenty-three billion, five hundred eighty-one million, five hundred seventy-eight thousand, nine hundred sixty-six".