27601127549 has 2 divisors, whose sum is σ = 27601127550. Its totient is φ = 27601127548.

The previous prime is 27601127531. The next prime is 27601127599. The reversal of 27601127549 is 94572110672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27396208324 + 204919225 = 165518^2 + 14315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27601127549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27601127599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13800563774 + 13800563775.

It is an arithmetic number, because the mean of its divisors is an integer number (13800563775).

Almost surely, 2^27601127549 is an apocalyptic number.

It is an amenable number.

27601127549 is a deficient number, since it is larger than the sum of its proper divisors (1).

27601127549 is an equidigital number, since it uses as much as digits as its factorization.

27601127549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 27601127549 in words is "twenty-seven billion, six hundred one million, one hundred twenty-seven thousand, five hundred forty-nine".