12180126987 has 12 divisors (see below), whose sum is σ = 20106876400. Its totient is φ = 6960072528.

The previous prime is 12180126983. The next prime is 12180127009. The reversal of 12180126987 is 78962108121.

It is not a de Polignac number, because 12180126987 - 2² = 12180126983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180126983) 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 11 ways as a sum of consecutive naturals, for example, 96667612 + ... + 96667737.

Almost surely, 2^12180126987 is an apocalyptic number.

12180126987 is a deficient number, since it is larger than the sum of its proper divisors (7926749413).

12180126987 is a wasteful number, since it uses less digits than its factorization.

12180126987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193335362 (or 193335359 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 12180126987 in words is "twelve billion, one hundred eighty million, one hundred twenty-six thousand, nine hundred eighty-seven".