12129608847 has 8 divisors (see below), whose sum is σ = 16289163520. Its totient is φ = 8028230040.

The previous prime is 12129608839. The next prime is 12129608849. The reversal of 12129608847 is 74880692121.

It is a happy number.

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

It is not a de Polignac number, because 12129608847 - 2³ = 12129608839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12129608796 and 12129608805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12129608849) 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, 14543479 + ... + 14544312.

It is an arithmetic number, because the mean of its divisors is an integer number (2036145440).

Almost surely, 2^12129608847 is an apocalyptic number.

12129608847 is a deficient number, since it is larger than the sum of its proper divisors (4159554673).

12129608847 is a wasteful number, since it uses less digits than its factorization.

12129608847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29087933.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 12129608847 in words is "twelve billion, one hundred twenty-nine million, six hundred eight thousand, eight hundred forty-seven".