27939059647417 has 2 divisors, whose sum is σ = 27939059647418. Its totient is φ = 27939059647416.

The previous prime is 27939059647337. The next prime is 27939059647519. The reversal of 27939059647417 is 71474695093972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24453262360576 + 3485797286841 = 4945024^2 + 1867029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27939059647417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27939059647417.

It is not a weakly prime, because it can be changed into another prime (27939059647117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13969529823708 + 13969529823709.

It is an arithmetic number, because the mean of its divisors is an integer number (13969529823709).

Almost surely, 2^{27939059647417} is an apocalyptic number.

It is an amenable number.

27939059647417 is a deficient number, since it is larger than the sum of its proper divisors (1).

27939059647417 is an equidigital number, since it uses as much as digits as its factorization.

27939059647417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720135360, while the sum is 73.

The spelling of 27939059647417 in words is "twenty-seven trillion, nine hundred thirty-nine billion, fifty-nine million, six hundred forty-seven thousand, four hundred seventeen".