12185987884 has 24 divisors (see below), whose sum is σ = 24392678688. Its totient is φ = 5218129920.

The previous prime is 12185987861. The next prime is 12185987911. The reversal of 12185987884 is 48878958121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151189 + ... + 217324.

It is an arithmetic number, because the mean of its divisors is an integer number (1016361612).

Almost surely, 2^12185987884 is an apocalyptic number.

12185987884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12185987884 is an abundant number, since it is smaller than the sum of its proper divisors (12206690804).

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

12185987884 is a wasteful number, since it uses less digits than its factorization.

12185987884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369705 (or 369703 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 61.

The spelling of 12185987884 in words is "twelve billion, one hundred eighty-five million, nine hundred eighty-seven thousand, eight hundred eighty-four".