12180616129 has 12 divisors (see below), whose sum is σ = 13418489700. Its totient is φ = 11048576000.

The previous prime is 12180616111. The next prime is 12180616199. The reversal of 12180616129 is 92161608121.

It can be written as a sum of positive squares in 2 ways, for example, as 2718579600 + 9462036529 = 52140^2 + 97273^2 .

It is not a de Polignac number, because 12180616129 - 2¹¹ = 12180614081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12180616199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57772 + ... + 166429.

It is an arithmetic number, because the mean of its divisors is an integer number (1118207475).

Almost surely, 2^12180616129 is an apocalyptic number.

It is an amenable number.

12180616129 is a deficient number, since it is larger than the sum of its proper divisors (1237873571).

12180616129 is a wasteful number, since it uses less digits than its factorization.

12180616129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224672 (or 224661 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 12180616129 in words is "twelve billion, one hundred eighty million, six hundred sixteen thousand, one hundred twenty-nine".