27862216717 has 2 divisors, whose sum is σ = 27862216718. Its totient is φ = 27862216716.

The previous prime is 27862216667. The next prime is 27862216799. The reversal of 27862216717 is 71761226872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22290191401 + 5572025316 = 149299^2 + 74646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27862216717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27862216517) 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, 13931108358 + 13931108359.

It is an arithmetic number, because the mean of its divisors is an integer number (13931108359).

Almost surely, 2^27862216717 is an apocalyptic number.

It is an amenable number.

27862216717 is a deficient number, since it is larger than the sum of its proper divisors (1).

27862216717 is an equidigital number, since it uses as much as digits as its factorization.

27862216717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The spelling of 27862216717 in words is "twenty-seven billion, eight hundred sixty-two million, two hundred sixteen thousand, seven hundred seventeen".