12089450187 has 18 divisors (see below), whose sum is σ = 18254797652. Its totient is φ = 7709211576.

The previous prime is 12089450173. The next prime is 12089450203. The reversal of 12089450187 is 78105498021.

12089450187 is a `hidden beast` number, since 12 + 0 + 8 + 9 + 450 + 187 = 666.

It is not a de Polignac number, because 12089450187 - 2¹⁵ = 12089417419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12089450137) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1264873 + ... + 1274394.

Almost surely, 2^12089450187 is an apocalyptic number.

12089450187 is a deficient number, since it is larger than the sum of its proper divisors (6165347465).

12089450187 is a wasteful number, since it uses less digits than its factorization.

12089450187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539319 (or 2539293 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 12089450187 in words is "twelve billion, eighty-nine million, four hundred fifty thousand, one hundred eighty-seven".