27828986195 has 4 divisors (see below), whose sum is σ = 33394783440. Its totient is φ = 22263188952.

The previous prime is 27828986191. The next prime is 27828986243. The reversal of 27828986195 is 59168982872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27828986195 - 2² = 27828986191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27828986191) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2782898615 + ... + 2782898624.

It is an arithmetic number, because the mean of its divisors is an integer number (8348695860).

Almost surely, 2^27828986195 is an apocalyptic number.

27828986195 is a deficient number, since it is larger than the sum of its proper divisors (5565797245).

27828986195 is an equidigital number, since it uses as much as digits as its factorization.

27828986195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565797244.

The product of its digits is 34836480, while the sum is 65.

The spelling of 27828986195 in words is "twenty-seven billion, eight hundred twenty-eight million, nine hundred eighty-six thousand, one hundred ninety-five".