27123312186 has 40 divisors (see below), whose sum is σ = 62189729184. Its totient is φ = 8830843560.

The previous prime is 27123312179. The next prime is 27123312211. The reversal of 27123312186 is 68121332172.

It is a self number, because there is not a number n which added to its sum of digits gives 27123312186.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1939870 + ... + 1953801.

Almost surely, 2^27123312186 is an apocalyptic number.

27123312186 is an abundant number, since it is smaller than the sum of its proper divisors (35066416998).

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

27123312186 is a wasteful number, since it uses less digits than its factorization.

27123312186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893728 (or 3893719 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The spelling of 27123312186 in words is "twenty-seven billion, one hundred twenty-three million, three hundred twelve thousand, one hundred eighty-six".