27731830663 has 2 divisors, whose sum is σ = 27731830664. Its totient is φ = 27731830662.

The previous prime is 27731830661. The next prime is 27731830723. The reversal of 27731830663 is 36603813772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27731830663 - 2¹ = 27731830661 is a prime.

Together with 27731830661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27731830661) 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, 13865915331 + 13865915332.

It is an arithmetic number, because the mean of its divisors is an integer number (13865915332).

Almost surely, 2^27731830663 is an apocalyptic number.

27731830663 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731830663 is an equidigital number, since it uses as much as digits as its factorization.

27731830663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 27731830663 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred thirty thousand, six hundred sixty-three".