27660013939 has 2 divisors, whose sum is σ = 27660013940. Its totient is φ = 27660013938.

The previous prime is 27660013861. The next prime is 27660013949. The reversal of 27660013939 is 93931006672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27660013939 - 2⁷ = 27660013811 is a prime.

It is a super-2 number, since 2×27660013939² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27660013949) 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, 13830006969 + 13830006970.

It is an arithmetic number, because the mean of its divisors is an integer number (13830006970).

Almost surely, 2^27660013939 is an apocalyptic number.

27660013939 is a deficient number, since it is larger than the sum of its proper divisors (1).

27660013939 is an equidigital number, since it uses as much as digits as its factorization.

27660013939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 46.

The spelling of 27660013939 in words is "twenty-seven billion, six hundred sixty million, thirteen thousand, nine hundred thirty-nine".