12987996192 has 144 divisors (see below), whose sum is σ = 40556067552. Its totient is φ = 4074624000.

The previous prime is 12987996167. The next prime is 12987996227. The reversal of 12987996192 is 29169978921.

12987996192 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 7 + 9 + 9 + 619 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83067 + ... + 181317.

It is an arithmetic number, because the mean of its divisors is an integer number (281639358).

Almost surely, 2^12987996192 is an apocalyptic number.

12987996192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12987996192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20278033776).

12987996192 is an abundant number, since it is smaller than the sum of its proper divisors (27568071360).

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

12987996192 is an equidigital number, since it uses as much as digits as its factorization.

12987996192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98293 (or 98273 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The spelling of 12987996192 in words is "twelve billion, nine hundred eighty-seven million, nine hundred ninety-six thousand, one hundred ninety-two".