23181967718 has 48 divisors (see below), whose sum is σ = 43582386960. Its totient is φ = 9166538304.

The previous prime is 23181967667. The next prime is 23181967751. The reversal of 23181967718 is 81776918132.

It is a self number, because there is not a number n which added to its sum of digits gives 23181967718.

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, 4659080 + ... + 4664052.

It is an arithmetic number, because the mean of its divisors is an integer number (907966395).

Almost surely, 2^23181967718 is an apocalyptic number.

23181967718 is a deficient number, since it is larger than the sum of its proper divisors (20400419242).

23181967718 is a wasteful number, since it uses less digits than its factorization.

23181967718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8661 (or 8654 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 53.

The spelling of 23181967718 in words is "twenty-three billion, one hundred eighty-one million, nine hundred sixty-seven thousand, seven hundred eighteen".