12804878912 has 28 divisors (see below), whose sum is σ = 29039637120. Its totient is φ = 5487805056.

The previous prime is 12804878903. The next prime is 12804878927. The reversal of 12804878912 is 21987840821.

It is a tau number, because it is divible by the number of its divisors (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14290712 + ... + 14291607.

Almost surely, 2^12804878912 is an apocalyptic number.

It is an amenable number.

12804878912 is an abundant number, since it is smaller than the sum of its proper divisors (16234758208).

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

12804878912 is an equidigital number, since it uses as much as digits as its factorization.

12804878912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28582338 (or 28582328 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 50.

The spelling of 12804878912 in words is "twelve billion, eight hundred four million, eight hundred seventy-eight thousand, nine hundred twelve".