129636449133 has 32 divisors (see below), whose sum is σ = 187205437440. Its totient is φ = 79526471040.

The previous prime is 129636449083. The next prime is 129636449141. The reversal of 129636449133 is 331944636921.

It is not a de Polignac number, because 129636449133 - 2¹⁸ = 129636186989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129636349133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408316 + ... + 652682.

It is an arithmetic number, because the mean of its divisors is an integer number (5850169920).

Almost surely, 2^129636449133 is an apocalyptic number.

It is an amenable number.

129636449133 is a deficient number, since it is larger than the sum of its proper divisors (57568988307).

129636449133 is a wasteful number, since it uses less digits than its factorization.

129636449133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244657.

The product of its digits is 2519424, while the sum is 51.

The spelling of 129636449133 in words is "one hundred twenty-nine billion, six hundred thirty-six million, four hundred forty-nine thousand, one hundred thirty-three".