23163863985 has 24 divisors (see below), whose sum is σ = 40397033664. Its totient is φ = 12278265120.

The previous prime is 23163863981. The next prime is 23163863993. The reversal of 23163863985 is 58936836132.

It is a happy number.

It is not a de Polignac number, because 23163863985 - 2² = 23163863981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23163863981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1571661 + ... + 1586330.

It is an arithmetic number, because the mean of its divisors is an integer number (1683209736).

Almost surely, 2^23163863985 is an apocalyptic number.

It is an amenable number.

23163863985 is a deficient number, since it is larger than the sum of its proper divisors (17233169679).

23163863985 is a wasteful number, since it uses less digits than its factorization.

23163863985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158165 (or 3158162 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 23163863985 in words is "twenty-three billion, one hundred sixty-three million, eight hundred sixty-three thousand, nine hundred eighty-five".