12987144156 has 24 divisors (see below), whose sum is σ = 34632384640. Its totient is φ = 3710612592.

The previous prime is 12987144139. The next prime is 12987144167. The reversal of 12987144156 is 65144178921.

It is a congruent number.

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, 77304346 + ... + 77304513.

Almost surely, 2^12987144156 is an apocalyptic number.

It is an amenable number.

12987144156 is an abundant number, since it is smaller than the sum of its proper divisors (21645240484).

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

12987144156 is a wasteful number, since it uses less digits than its factorization.

12987144156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154608873 (or 154608871 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The spelling of 12987144156 in words is "twelve billion, nine hundred eighty-seven million, one hundred forty-four thousand, one hundred fifty-six".