129643731189 has 24 divisors (see below), whose sum is σ = 214154995392. Its totient is φ = 74033688960.

The previous prime is 129643731169. The next prime is 129643731211. The reversal of 129643731189 is 981137346921.

129643731189 is a `hidden beast` number, since 1 + 2 + 96 + 4 + 373 + 1 + 189 = 666.

It is not a de Polignac number, because 129643731189 - 2⁹ = 129643730677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129643731169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 575604 + ... + 768509.

It is an arithmetic number, because the mean of its divisors is an integer number (8923124808).

Almost surely, 2^129643731189 is an apocalyptic number.

It is an amenable number.

129643731189 is a deficient number, since it is larger than the sum of its proper divisors (84511264203).

129643731189 is a wasteful number, since it uses less digits than its factorization.

129643731189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345657 (or 1345654 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 129643731189 in words is "one hundred twenty-nine billion, six hundred forty-three million, seven hundred thirty-one thousand, one hundred eighty-nine".