12365399438 has 8 divisors (see below), whose sum is σ = 21197827632. Its totient is φ = 5299456896.

The previous prime is 12365399413. The next prime is 12365399461. The reversal of 12365399438 is 83499356321.

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

It is a super-2 number, since 2×12365399438² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12365399438.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 441621395 + ... + 441621422.

It is an arithmetic number, because the mean of its divisors is an integer number (2649728454).

Almost surely, 2^12365399438 is an apocalyptic number.

12365399438 is a deficient number, since it is larger than the sum of its proper divisors (8832428194).

12365399438 is an equidigital number, since it uses as much as digits as its factorization.

12365399438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883242826.

The product of its digits is 4199040, while the sum is 53.

The spelling of 12365399438 in words is "twelve billion, three hundred sixty-five million, three hundred ninety-nine thousand, four hundred thirty-eight".