12738878312 has 32 divisors (see below), whose sum is σ = 24518181600. Its totient is φ = 6201633984.

The previous prime is 12738878297. The next prime is 12738878323. The reversal of 12738878312 is 21387883721.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

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, 50639 + ... + 167457.

It is an arithmetic number, because the mean of its divisors is an integer number (766193175).

Almost surely, 2^12738878312 is an apocalyptic number.

It is an amenable number.

12738878312 is a deficient number, since it is larger than the sum of its proper divisors (11779303288).

12738878312 is a wasteful number, since it uses less digits than its factorization.

12738878312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117185 (or 117181 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The spelling of 12738878312 in words is "twelve billion, seven hundred thirty-eight million, eight hundred seventy-eight thousand, three hundred twelve".