27768861199 has 2 divisors, whose sum is σ = 27768861200. Its totient is φ = 27768861198.

The previous prime is 27768861161. The next prime is 27768861203. The reversal of 27768861199 is 99116886772.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27768861199 is a prime.

It is a super-2 number, since 2×27768861199² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27768861199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27768861149) 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, 13884430599 + 13884430600.

It is an arithmetic number, because the mean of its divisors is an integer number (13884430600).

Almost surely, 2^27768861199 is an apocalyptic number.

27768861199 is a deficient number, since it is larger than the sum of its proper divisors (1).

27768861199 is an equidigital number, since it uses as much as digits as its factorization.

27768861199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 64.

The spelling of 27768861199 in words is "twenty-seven billion, seven hundred sixty-eight million, eight hundred sixty-one thousand, one hundred ninety-nine".