27963587671 has 2 divisors, whose sum is σ = 27963587672. Its totient is φ = 27963587670.

The previous prime is 27963587669. The next prime is 27963587677. The reversal of 27963587671 is 17678536972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27963587671 - 2¹ = 27963587669 is a prime.

Together with 27963587669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27963587677) by changing a digit.

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 as a sum of consecutive naturals, namely, 13981793835 + 13981793836.

It is an arithmetic number, because the mean of its divisors is an integer number (13981793836).

Almost surely, 2^27963587671 is an apocalyptic number.

27963587671 is a deficient number, since it is larger than the sum of its proper divisors (1).

27963587671 is an equidigital number, since it uses as much as digits as its factorization.

27963587671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 61.

The spelling of 27963587671 in words is "twenty-seven billion, nine hundred sixty-three million, five hundred eighty-seven thousand, six hundred seventy-one".