12385218699 has 48 divisors (see below), whose sum is σ = 21006935040. Its totient is φ = 6885388800.

The previous prime is 12385218679. The next prime is 12385218701. The reversal of 12385218699 is 99681258321.

12385218699 is a `hidden beast` number, since 1 + 2 + 38 + 521 + 86 + 9 + 9 = 666.

12385218699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12385218699 - 2⁵ = 12385218667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12385218679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343374 + ... + 377724.

It is an arithmetic number, because the mean of its divisors is an integer number (437644480).

Almost surely, 2^12385218699 is an apocalyptic number.

12385218699 is a deficient number, since it is larger than the sum of its proper divisors (8621716341).

12385218699 is a wasteful number, since it uses less digits than its factorization.

12385218699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34520 (or 34517 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 12385218699 in words is "twelve billion, three hundred eighty-five million, two hundred eighteen thousand, six hundred ninety-nine".