23531163066 has 24 divisors (see below), whose sum is σ = 52872490944. Its totient is φ = 7843720860.

The previous prime is 23531163043. The next prime is 23531163083. The reversal of 23531163066 is 66036113532.

23531163066 is a `hidden beast` number, since 2 + 3 + 5 + 3 + 11 + 630 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23531163066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24208530 + ... + 24209501.

It is an arithmetic number, because the mean of its divisors is an integer number (2203020456).

Almost surely, 2^23531163066 is an apocalyptic number.

23531163066 is an abundant number, since it is smaller than the sum of its proper divisors (29341327878).

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

23531163066 is an equidigital number, since it uses as much as digits as its factorization.

23531163066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48418048 (or 48418036 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

Adding to 23531163066 its reverse (66036113532), we get a palindrome (89567276598).

The spelling of 23531163066 in words is "twenty-three billion, five hundred thirty-one million, one hundred sixty-three thousand, sixty-six".