27527908081 has 2 divisors, whose sum is σ = 27527908082. Its totient is φ = 27527908080.

The previous prime is 27527907989. The next prime is 27527908103. The reversal of 27527908081 is 18080972572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27492624481 + 35283600 = 165809^2 + 5940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27527908081 is a prime.

It is a super-2 number, since 2×27527908081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27527908181) 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, 13763954040 + 13763954041.

It is an arithmetic number, because the mean of its divisors is an integer number (13763954041).

Almost surely, 2^27527908081 is an apocalyptic number.

It is an amenable number.

27527908081 is a deficient number, since it is larger than the sum of its proper divisors (1).

27527908081 is an equidigital number, since it uses as much as digits as its factorization.

27527908081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 27527908081 in words is "twenty-seven billion, five hundred twenty-seven million, nine hundred eight thousand, eighty-one".