12387218845 has 8 divisors (see below), whose sum is σ = 14874588000. Its totient is φ = 9903158160.

The previous prime is 12387218819. The next prime is 12387218887. The reversal of 12387218845 is 54881278321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12387218845 - 2²⁵ = 12353664413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 818871 + ... + 833860.

It is an arithmetic number, because the mean of its divisors is an integer number (1859323500).

Almost surely, 2^12387218845 is an apocalyptic number.

It is an amenable number.

12387218845 is a deficient number, since it is larger than the sum of its proper divisors (2487369155).

12387218845 is a wasteful number, since it uses less digits than its factorization.

12387218845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654235.

The product of its digits is 860160, while the sum is 49.

The spelling of 12387218845 in words is "twelve billion, three hundred eighty-seven million, two hundred eighteen thousand, eight hundred forty-five".