12231186378 has 16 divisors (see below), whose sum is σ = 24464598816. Its totient is φ = 4076691120.

The previous prime is 12231186377. The next prime is 12231186397. The reversal of 12231186378 is 87368113221.

It is not an unprimeable number, because it can be changed into a prime (12231186377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16501 + ... + 157272.

It is an arithmetic number, because the mean of its divisors is an integer number (1529037426).

Almost surely, 2^12231186378 is an apocalyptic number.

12231186378 is an abundant number, since it is smaller than the sum of its proper divisors (12233412438).

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

12231186378 is a wasteful number, since it uses less digits than its factorization.

12231186378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185509.

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

Adding to 12231186378 its reverse (87368113221), we get a palindrome (99599299599).

The spelling of 12231186378 in words is "twelve billion, two hundred thirty-one million, one hundred eighty-six thousand, three hundred seventy-eight".