129920556604 has 6 divisors (see below), whose sum is σ = 227360974064. Its totient is φ = 64960278300.

The previous prime is 129920556569. The next prime is 129920556629. The reversal of 129920556604 is 406655029921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16240069572 + ... + 16240069579.

Almost surely, 2^129920556604 is an apocalyptic number.

It is an amenable number.

129920556604 is a deficient number, since it is larger than the sum of its proper divisors (97440417460).

129920556604 is a wasteful number, since it uses less digits than its factorization.

129920556604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480139155 (or 32480139153 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The spelling of 129920556604 in words is "one hundred twenty-nine billion, nine hundred twenty million, five hundred fifty-six thousand, six hundred four".