12628878878 has 48 divisors (see below), whose sum is σ = 24868393200. Its totient is φ = 4750663680.

The previous prime is 12628878863. The next prime is 12628878881. The reversal of 12628878878 is 87887882621.

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 23 ways as a sum of consecutive naturals, for example, 170723 + ... + 233246.

It is an arithmetic number, because the mean of its divisors is an integer number (518091525).

Almost surely, 2^12628878878 is an apocalyptic number.

12628878878 is a deficient number, since it is larger than the sum of its proper divisors (12239514322).

12628878878 is a wasteful number, since it uses less digits than its factorization.

12628878878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404025 (or 404018 counting only the distinct ones).

The product of its digits is 38535168, while the sum is 65.

The spelling of 12628878878 in words is "twelve billion, six hundred twenty-eight million, eight hundred seventy-eight thousand, eight hundred seventy-eight".