27814986637 has 2 divisors, whose sum is σ = 27814986638. Its totient is φ = 27814986636.

The previous prime is 27814986629. The next prime is 27814986653. The reversal of 27814986637 is 73668941872.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23064193161 + 4750793476 = 151869^2 + 68926^2 .

It is a cyclic number.

It is not a de Polignac number, because 27814986637 - 2³ = 27814986629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27814981637) 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 as a sum of consecutive naturals, namely, 13907493318 + 13907493319.

It is an arithmetic number, because the mean of its divisors is an integer number (13907493319).

Almost surely, 2^27814986637 is an apocalyptic number.

It is an amenable number.

27814986637 is a deficient number, since it is larger than the sum of its proper divisors (1).

27814986637 is an equidigital number, since it uses as much as digits as its factorization.

27814986637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 61.

The spelling of 27814986637 in words is "twenty-seven billion, eight hundred fourteen million, nine hundred eighty-six thousand, six hundred thirty-seven".