27547164363217 has 2 divisors, whose sum is σ = 27547164363218. Its totient is φ = 27547164363216.

The previous prime is 27547164363167. The next prime is 27547164363247. The reversal of 27547164363217 is 71236346174572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27463301415936 + 83862947281 = 5240544^2 + 289591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27547164363217 is a prime.

It is not a weakly prime, because it can be changed into another prime (27547164363247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13773582181608 + 13773582181609.

It is an arithmetic number, because the mean of its divisors is an integer number (13773582181609).

Almost surely, 2^{27547164363217} is an apocalyptic number.

It is an amenable number.

27547164363217 is a deficient number, since it is larger than the sum of its proper divisors (1).

27547164363217 is an equidigital number, since it uses as much as digits as its factorization.

27547164363217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 58.

The spelling of 27547164363217 in words is "twenty-seven trillion, five hundred forty-seven billion, one hundred sixty-four million, three hundred sixty-three thousand, two hundred seventeen".