129297192166 has 8 divisors (see below), whose sum is σ = 194920390800. Its totient is φ = 64323728568.

The previous prime is 129297192113. The next prime is 129297192187. The reversal of 129297192166 is 661291792921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162433261 + ... + 162434056.

It is an arithmetic number, because the mean of its divisors is an integer number (24365048850).

Almost surely, 2^129297192166 is an apocalyptic number.

129297192166 is a deficient number, since it is larger than the sum of its proper divisors (65623198634).

129297192166 is a wasteful number, since it uses less digits than its factorization.

129297192166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324867518.

The product of its digits is 1469664, while the sum is 55.

The spelling of 129297192166 in words is "one hundred twenty-nine billion, two hundred ninety-seven million, one hundred ninety-two thousand, one hundred sixty-six".