27723427663 has 2 divisors, whose sum is σ = 27723427664. Its totient is φ = 27723427662.

The previous prime is 27723427639. The next prime is 27723427741. The reversal of 27723427663 is 36672432772.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27723427663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27723427363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13861713831 + 13861713832.

It is an arithmetic number, because the mean of its divisors is an integer number (13861713832).

Almost surely, 2^27723427663 is an apocalyptic number.

27723427663 is a deficient number, since it is larger than the sum of its proper divisors (1).

27723427663 is an equidigital number, since it uses as much as digits as its factorization.

27723427663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 49.

The spelling of 27723427663 in words is "twenty-seven billion, seven hundred twenty-three million, four hundred twenty-seven thousand, six hundred sixty-three".