12188833878 has 16 divisors (see below), whose sum is σ = 26252873136. Its totient is φ = 3750410400.

The previous prime is 12188833861. The next prime is 12188833903. The reversal of 12188833878 is 87833888121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78133473 + ... + 78133628.

It is an arithmetic number, because the mean of its divisors is an integer number (1640804571).

Almost surely, 2^12188833878 is an apocalyptic number.

12188833878 is an abundant number, since it is smaller than the sum of its proper divisors (14064039258).

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

12188833878 is a wasteful number, since it uses less digits than its factorization.

12188833878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156267119.

The product of its digits is 4128768, while the sum is 57.

The spelling of 12188833878 in words is "twelve billion, one hundred eighty-eight million, eight hundred thirty-three thousand, eight hundred seventy-eight".