27771640363 has 2 divisors, whose sum is σ = 27771640364. Its totient is φ = 27771640362.

The previous prime is 27771640357. The next prime is 27771640381. The reversal of 27771640363 is 36304617772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27771640363 - 2²¹ = 27769543211 is a prime.

It is not a weakly prime, because it can be changed into another prime (27771640313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13885820181 + 13885820182.

It is an arithmetic number, because the mean of its divisors is an integer number (13885820182).

Almost surely, 2^27771640363 is an apocalyptic number.

27771640363 is a deficient number, since it is larger than the sum of its proper divisors (1).

27771640363 is an equidigital number, since it uses as much as digits as its factorization.

27771640363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 46.

The spelling of 27771640363 in words is "twenty-seven billion, seven hundred seventy-one million, six hundred forty thousand, three hundred sixty-three".