27491958079 has 2 divisors, whose sum is σ = 27491958080. Its totient is φ = 27491958078.

The previous prime is 27491958077. The next prime is 27491958101. The reversal of 27491958079 is 97085919472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27491958079 - 2¹ = 27491958077 is a prime.

Together with 27491958077, 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 (27491958071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13745979039 + 13745979040.

It is an arithmetic number, because the mean of its divisors is an integer number (13745979040).

Almost surely, 2^27491958079 is an apocalyptic number.

27491958079 is a deficient number, since it is larger than the sum of its proper divisors (1).

27491958079 is an equidigital number, since it uses as much as digits as its factorization.

27491958079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 27491958079 in words is "twenty-seven billion, four hundred ninety-one million, nine hundred fifty-eight thousand, seventy-nine".