12387244059 has 24 divisors (see below), whose sum is σ = 18746706160. Its totient is φ = 8173011456.

The previous prime is 12387244043. The next prime is 12387244139. The reversal of 12387244059 is 95044278321.

12387244059 is a `hidden beast` number, since 1 + 238 + 7 + 2 + 4 + 405 + 9 = 666.

It is not a de Polignac number, because 12387244059 - 2⁴ = 12387244043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12387242059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239194 + ... + 286335.

Almost surely, 2^12387244059 is an apocalyptic number.

12387244059 is a deficient number, since it is larger than the sum of its proper divisors (6359462101).

12387244059 is an frugal number, since it uses more digits than its factorization.

12387244059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525641 (or 525629 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 12387244059 in words is "twelve billion, three hundred eighty-seven million, two hundred forty-four thousand, fifty-nine".