12238113678 has 24 divisors (see below), whose sum is σ = 28472346792. Its totient is φ = 3496603824.

The previous prime is 12238113623. The next prime is 12238113703. The reversal of 12238113678 is 87631183221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20812825 + ... + 20813412.

It is an arithmetic number, because the mean of its divisors is an integer number (1186347783).

Almost surely, 2^12238113678 is an apocalyptic number.

12238113678 is an abundant number, since it is smaller than the sum of its proper divisors (16234233114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12238113678 is a wasteful number, since it uses less digits than its factorization.

12238113678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41626256 (or 41626249 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

Adding to 12238113678 its reverse (87631183221), we get a palindrome (99869296899).

The spelling of 12238113678 in words is "twelve billion, two hundred thirty-eight million, one hundred thirteen thousand, six hundred seventy-eight".