12149205188 has 54 divisors (see below), whose sum is σ = 22835222046. Its totient is φ = 5655005568.

The previous prime is 12149205179. The next prime is 12149205203. The reversal of 12149205188 is 88150294121.

It can be written as a sum of positive squares in only one way, i.e., 12068780164 + 80425024 = 109858^2 + 8968^2 .

It is a super-2 number, since 2×12149205188² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5025356 + ... + 5027772.

Almost surely, 2^12149205188 is an apocalyptic number.

It is an amenable number.

12149205188 is a deficient number, since it is larger than the sum of its proper divisors (10686016858).

12149205188 is a wasteful number, since it uses less digits than its factorization.

12149205188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 12149205188 in words is "twelve billion, one hundred forty-nine million, two hundred five thousand, one hundred eighty-eight".