129166056275 has 12 divisors (see below), whose sum is σ = 160173065232. Its totient is φ = 103328228640.

The previous prime is 129166056251. The next prime is 129166056307. The reversal of 129166056275 is 572650661921.

It is not a de Polignac number, because 129166056275 - 2⁶ = 129166056211 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525074 + ... + 730776.

It is an arithmetic number, because the mean of its divisors is an integer number (13347755436).

Almost surely, 2^129166056275 is an apocalyptic number.

129166056275 is a deficient number, since it is larger than the sum of its proper divisors (31007008957).

129166056275 is a wasteful number, since it uses less digits than its factorization.

129166056275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230830 (or 230825 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 129166056275 in words is "one hundred twenty-nine billion, one hundred sixty-six million, fifty-six thousand, two hundred seventy-five".