27743281663 has 2 divisors, whose sum is σ = 27743281664. Its totient is φ = 27743281662.

The previous prime is 27743281649. The next prime is 27743281681. The reversal of 27743281663 is 36618234772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27743281663 - 2²⁵ = 27709727231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27743281633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13871640831 + 13871640832.

It is an arithmetic number, because the mean of its divisors is an integer number (13871640832).

Almost surely, 2^27743281663 is an apocalyptic number.

27743281663 is a deficient number, since it is larger than the sum of its proper divisors (1).

27743281663 is an equidigital number, since it uses as much as digits as its factorization.

27743281663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 49.

The spelling of 27743281663 in words is "twenty-seven billion, seven hundred forty-three million, two hundred eighty-one thousand, six hundred sixty-three".