12878716672 has 36 divisors (see below), whose sum is σ = 25934680800. Its totient is φ = 6382358528.

The previous prime is 12878716661. The next prime is 12878716687. The reversal of 12878716672 is 27661787821.

It is a super-2 number, since 2×12878716672² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 193672 + ... + 251527.

It is an arithmetic number, because the mean of its divisors is an integer number (720407800).

Almost surely, 2^12878716672 is an apocalyptic number.

It is an amenable number.

12878716672 is an abundant number, since it is smaller than the sum of its proper divisors (13055964128).

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

12878716672 is an equidigital number, since it uses as much as digits as its factorization.

12878716672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445328 (or 445314 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 55.

The spelling of 12878716672 in words is "twelve billion, eight hundred seventy-eight million, seven hundred sixteen thousand, six hundred seventy-two".