199775794851359 has 2 divisors, whose sum is σ = 199775794851360. Its totient is φ = 199775794851358.

The previous prime is 199775794851301. The next prime is 199775794851371. The reversal of 199775794851359 is 953158497577991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199775794851359 - 2¹⁶ = 199775794785823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199775794853359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99887897425679 + 99887897425680.

It is an arithmetic number, because the mean of its divisors is an integer number (99887897425680).

Almost surely, 2^{199775794851359} is an apocalyptic number.

199775794851359 is a deficient number, since it is larger than the sum of its proper divisors (1).

199775794851359 is an equidigital number, since it uses as much as digits as its factorization.

199775794851359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27005076000, while the sum is 89.

The spelling of 199775794851359 in words is "one hundred ninety-nine trillion, seven hundred seventy-five billion, seven hundred ninety-four million, eight hundred fifty-one thousand, three hundred fifty-nine".