27567565349 has 2 divisors, whose sum is σ = 27567565350. Its totient is φ = 27567565348.

The previous prime is 27567565343. The next prime is 27567565369. The reversal of 27567565349 is 94356576572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14415604225 + 13151961124 = 120065^2 + 114682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27567565349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27567565343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13783782674 + 13783782675.

It is an arithmetic number, because the mean of its divisors is an integer number (13783782675).

Almost surely, 2^27567565349 is an apocalyptic number.

It is an amenable number.

27567565349 is a deficient number, since it is larger than the sum of its proper divisors (1).

27567565349 is an equidigital number, since it uses as much as digits as its factorization.

27567565349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628000, while the sum is 59.

The spelling of 27567565349 in words is "twenty-seven billion, five hundred sixty-seven million, five hundred sixty-five thousand, three hundred forty-nine".