12878978548 has 24 divisors (see below), whose sum is σ = 23479263360. Its totient is φ = 6175942080.

The previous prime is 12878978533. The next prime is 12878978569. The reversal of 12878978548 is 84587987821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655836 + ... + 675187.

It is an arithmetic number, because the mean of its divisors is an integer number (978302640).

Almost surely, 2^12878978548 is an apocalyptic number.

It is an amenable number.

12878978548 is a deficient number, since it is larger than the sum of its proper divisors (10600284812).

12878978548 is a wasteful number, since it uses less digits than its factorization.

12878978548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331127 (or 1331125 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 67.

The spelling of 12878978548 in words is "twelve billion, eight hundred seventy-eight million, nine hundred seventy-eight thousand, five hundred forty-eight".