27769197773 has 2 divisors, whose sum is σ = 27769197774. Its totient is φ = 27769197772.

The previous prime is 27769197697. The next prime is 27769197817. The reversal of 27769197773 is 37779196772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26007045289 + 1762152484 = 161267^2 + 41978^2 .

It is a cyclic number.

It is not a de Polignac number, because 27769197773 - 2¹⁴ = 27769181389 is a prime.

It is a super-2 number, since 2×27769197773² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27769197473) 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, 13884598886 + 13884598887.

It is an arithmetic number, because the mean of its divisors is an integer number (13884598887).

Almost surely, 2^27769197773 is an apocalyptic number.

It is an amenable number.

27769197773 is a deficient number, since it is larger than the sum of its proper divisors (1).

27769197773 is an equidigital number, since it uses as much as digits as its factorization.

27769197773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49009212, while the sum is 65.

The spelling of 27769197773 in words is "twenty-seven billion, seven hundred sixty-nine million, one hundred ninety-seven thousand, seven hundred seventy-three".