129665634124 has 24 divisors (see below), whose sum is σ = 248017166768. Its totient is φ = 58952456640.

The previous prime is 129665634073. The next prime is 129665634143. The reversal of 129665634124 is 421436566921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18605247 + ... + 18612214.

Almost surely, 2^129665634124 is an apocalyptic number.

It is an amenable number.

129665634124 is a deficient number, since it is larger than the sum of its proper divisors (118351532644).

129665634124 is a wasteful number, since it uses less digits than its factorization.

129665634124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37217545 (or 37217543 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 49.

The spelling of 129665634124 in words is "one hundred twenty-nine billion, six hundred sixty-five million, six hundred thirty-four thousand, one hundred twenty-four".