129166056273 has 16 divisors (see below), whose sum is σ = 173596453056. Its totient is φ = 85424037120.

The previous prime is 129166056251. The next prime is 129166056307. The reversal of 129166056273 is 372650661921.

It is not a de Polignac number, because 129166056273 - 2¹⁷ = 129165925201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129166056203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502590 + ... + 714792.

It is an arithmetic number, because the mean of its divisors is an integer number (10849778316).

Almost surely, 2^129166056273 is an apocalyptic number.

It is an amenable number.

129166056273 is a deficient number, since it is larger than the sum of its proper divisors (44430396783).

129166056273 is a wasteful number, since it uses less digits than its factorization.

129166056273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213824.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 129166056273 in words is "one hundred twenty-nine billion, one hundred sixty-six million, fifty-six thousand, two hundred seventy-three".