27834347917 has 2 divisors, whose sum is σ = 27834347918. Its totient is φ = 27834347916.

The previous prime is 27834347909. The next prime is 27834347963. The reversal of 27834347917 is 71974343872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22954068036 + 4880279881 = 151506^2 + 69859^2 .

It is a cyclic number.

It is not a de Polignac number, because 27834347917 - 2³ = 27834347909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27834347417) 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, 13917173958 + 13917173959.

It is an arithmetic number, because the mean of its divisors is an integer number (13917173959).

Almost surely, 2^27834347917 is an apocalyptic number.

It is an amenable number.

27834347917 is a deficient number, since it is larger than the sum of its proper divisors (1).

27834347917 is an equidigital number, since it uses as much as digits as its factorization.

27834347917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The spelling of 27834347917 in words is "twenty-seven billion, eight hundred thirty-four million, three hundred forty-seven thousand, nine hundred seventeen".