27306639361 has 2 divisors, whose sum is σ = 27306639362. Its totient is φ = 27306639360.

The previous prime is 27306639329. The next prime is 27306639401. The reversal of 27306639361 is 16393660372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24384696336 + 2921943025 = 156156^2 + 54055^2 .

It is a cyclic number.

It is not a de Polignac number, because 27306639361 - 2⁵ = 27306639329 is a prime.

It is not a weakly prime, because it can be changed into another prime (27306639961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13653319680 + 13653319681.

It is an arithmetic number, because the mean of its divisors is an integer number (13653319681).

Almost surely, 2^27306639361 is an apocalyptic number.

It is an amenable number.

27306639361 is a deficient number, since it is larger than the sum of its proper divisors (1).

27306639361 is an equidigital number, since it uses as much as digits as its factorization.

27306639361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 46.

The spelling of 27306639361 in words is "twenty-seven billion, three hundred six million, six hundred thirty-nine thousand, three hundred sixty-one".