27663163663 has 2 divisors, whose sum is σ = 27663163664. Its totient is φ = 27663163662.

The previous prime is 27663163531. The next prime is 27663163687. The reversal of 27663163663 is 36636136672.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27663163663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27663163763) 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, 13831581831 + 13831581832.

It is an arithmetic number, because the mean of its divisors is an integer number (13831581832).

Almost surely, 2^27663163663 is an apocalyptic number.

27663163663 is a deficient number, since it is larger than the sum of its proper divisors (1).

27663163663 is an equidigital number, since it uses as much as digits as its factorization.

27663163663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 49.

The spelling of 27663163663 in words is "twenty-seven billion, six hundred sixty-three million, one hundred sixty-three thousand, six hundred sixty-three".