27779034826709 has 2 divisors, whose sum is σ = 27779034826710. Its totient is φ = 27779034826708.

The previous prime is 27779034826681. The next prime is 27779034826783. The reversal of 27779034826709 is 90762843097772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24367274887684 + 3411759939025 = 4936322^2 + 1847095^2 .

It is a cyclic number.

It is not a de Polignac number, because 27779034826709 - 2⁸ = 27779034826453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27779034126709) 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, 13889517413354 + 13889517413355.

It is an arithmetic number, because the mean of its divisors is an integer number (13889517413355).

Almost surely, 2^{27779034826709} is an apocalyptic number.

It is an amenable number.

27779034826709 is a deficient number, since it is larger than the sum of its proper divisors (1).

27779034826709 is an equidigital number, since it uses as much as digits as its factorization.

27779034826709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448084224, while the sum is 71.

The spelling of 27779034826709 in words is "twenty-seven trillion, seven hundred seventy-nine billion, thirty-four million, eight hundred twenty-six thousand, seven hundred nine".