129134209649 has 8 divisors (see below), whose sum is σ = 134548176000. Its totient is φ = 123784314192.

The previous prime is 129134209559. The next prime is 129134209651. The reversal of 129134209649 is 946902431921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129134209649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129134209597 and 129134209606.

It is not an unprimeable number, because it can be changed into a prime (129134209679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16013609 + ... + 16021670.

It is an arithmetic number, because the mean of its divisors is an integer number (16818522000).

Almost surely, 2^129134209649 is an apocalyptic number.

It is an amenable number.

129134209649 is a deficient number, since it is larger than the sum of its proper divisors (5413966351).

129134209649 is a wasteful number, since it uses less digits than its factorization.

129134209649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32035447.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 129134209649 in words is "one hundred twenty-nine billion, one hundred thirty-four million, two hundred nine thousand, six hundred forty-nine".