23121934168 has 16 divisors (see below), whose sum is σ = 43356528000. Its totient is φ = 11560193376.

The previous prime is 23121934163. The next prime is 23121934181. The reversal of 23121934168 is 86143912132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 23121934168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121934163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41998 + ... + 219106.

It is an arithmetic number, because the mean of its divisors is an integer number (2709783000).

Almost surely, 2^23121934168 is an apocalyptic number.

It is an amenable number.

23121934168 is a deficient number, since it is larger than the sum of its proper divisors (20234593832).

23121934168 is a wasteful number, since it uses less digits than its factorization.

23121934168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193434 (or 193430 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The spelling of 23121934168 in words is "twenty-three billion, one hundred twenty-one million, nine hundred thirty-four thousand, one hundred sixty-eight".