129165125155 has 8 divisors (see below), whose sum is σ = 169088891184. Its totient is φ = 93938272800.

The previous prime is 129165125153. The next prime is 129165125179. The reversal of 129165125155 is 551521561921.

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

It is not a de Polignac number, because 129165125155 - 2¹ = 129165125153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129165125153) 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 7 ways as a sum of consecutive naturals, for example, 1174228356 + ... + 1174228465.

It is an arithmetic number, because the mean of its divisors is an integer number (21136111398).

Almost surely, 2^129165125155 is an apocalyptic number.

129165125155 is a deficient number, since it is larger than the sum of its proper divisors (39923766029).

129165125155 is a wasteful number, since it uses less digits than its factorization.

129165125155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348456837.

The product of its digits is 135000, while the sum is 43.

The spelling of 129165125155 in words is "one hundred twenty-nine billion, one hundred sixty-five million, one hundred twenty-five thousand, one hundred fifty-five".