129123076168 has 64 divisors (see below), whose sum is σ = 248766059520. Its totient is φ = 62808345600.

The previous prime is 129123076129. The next prime is 129123076169. The reversal of 129123076168 is 861670321921.

It is not an unprimeable number, because it can be changed into a prime (129123076169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26803296 + ... + 26808112.

It is an arithmetic number, because the mean of its divisors is an integer number (3886969680).

Almost surely, 2^129123076168 is an apocalyptic number.

It is an amenable number.

129123076168 is a deficient number, since it is larger than the sum of its proper divisors (119642983352).

129123076168 is a wasteful number, since it uses less digits than its factorization.

129123076168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5398 (or 5394 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 129123076168 in words is "one hundred twenty-nine billion, one hundred twenty-three million, seventy-six thousand, one hundred sixty-eight".