12132243878 has 4 divisors (see below), whose sum is σ = 18198365820. Its totient is φ = 6066121938.

The previous prime is 12132243839. The next prime is 12132243961. The reversal of 12132243878 is 87834223121.

12132243878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87834223121 = 1129 ⋅77798249.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3033060968 + ... + 3033060971.

It is an arithmetic number, because the mean of its divisors is an integer number (4549591455).

Almost surely, 2^12132243878 is an apocalyptic number.

12132243878 is a deficient number, since it is larger than the sum of its proper divisors (6066121942).

12132243878 is an equidigital number, since it uses as much as digits as its factorization.

12132243878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066121941.

The product of its digits is 129024, while the sum is 41.

Adding to 12132243878 its reverse (87834223121), we get a palindrome (99966466999).

It can be divided in two parts, 12132243 and 878, that added together give a palindrome (12133121).

The spelling of 12132243878 in words is "twelve billion, one hundred thirty-two million, two hundred forty-three thousand, eight hundred seventy-eight".