27540507679 has 2 divisors, whose sum is σ = 27540507680. Its totient is φ = 27540507678.

The previous prime is 27540507661. The next prime is 27540507721. The reversal of 27540507679 is 97670504572.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27540507679 - 2⁵ = 27540507647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27540507649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13770253839 + 13770253840.

It is an arithmetic number, because the mean of its divisors is an integer number (13770253840).

Almost surely, 2^27540507679 is an apocalyptic number.

27540507679 is a deficient number, since it is larger than the sum of its proper divisors (1).

27540507679 is an equidigital number, since it uses as much as digits as its factorization.

27540507679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 27540507679 in words is "twenty-seven billion, five hundred forty million, five hundred seven thousand, six hundred seventy-nine".