27790926501817 has 2 divisors, whose sum is σ = 27790926501818. Its totient is φ = 27790926501816.

The previous prime is 27790926501799. The next prime is 27790926501913. The reversal of 27790926501817 is 71810562909772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24956858627856 + 2834067873961 = 4995684^2 + 1683469^2 .

It is a cyclic number.

It is not a de Polignac number, because 27790926501817 - 2³⁵ = 27756566763449 is a prime.

It is not a weakly prime, because it can be changed into another prime (27790926505817) 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, 13895463250908 + 13895463250909.

It is an arithmetic number, because the mean of its divisors is an integer number (13895463250909).

Almost surely, 2^{27790926501817} is an apocalyptic number.

It is an amenable number.

27790926501817 is a deficient number, since it is larger than the sum of its proper divisors (1).

27790926501817 is an equidigital number, since it uses as much as digits as its factorization.

27790926501817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26671680, while the sum is 64.

The spelling of 27790926501817 in words is "twenty-seven trillion, seven hundred ninety billion, nine hundred twenty-six million, five hundred one thousand, eight hundred seventeen".