199996826917 has 2 divisors, whose sum is σ = 199996826918. Its totient is φ = 199996826916.

The previous prime is 199996826891. The next prime is 199996826933. The reversal of 199996826917 is 719628699991.

199996826917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120607565796 + 79389261121 = 347286^2 + 281761^2 .

It is a cyclic number.

It is not a de Polignac number, because 199996826917 - 2³¹ = 197849343269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199996826947) 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, 99998413458 + 99998413459.

It is an arithmetic number, because the mean of its divisors is an integer number (99998413459).

Almost surely, 2^199996826917 is an apocalyptic number.

It is an amenable number.

199996826917 is a deficient number, since it is larger than the sum of its proper divisors (1).

199996826917 is an equidigital number, since it uses as much as digits as its factorization.

199996826917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238085568, while the sum is 76.

The spelling of 199996826917 in words is "one hundred ninety-nine billion, nine hundred ninety-six million, eight hundred twenty-six thousand, nine hundred seventeen".