199205038418663 has 2 divisors, whose sum is σ = 199205038418664. Its totient is φ = 199205038418662.

The previous prime is 199205038418611. The next prime is 199205038418669. The reversal of 199205038418663 is 366814830502991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 199205038418663 - 2⁶ = 199205038418599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199205038418663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199205038418669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99602519209331 + 99602519209332.

It is an arithmetic number, because the mean of its divisors is an integer number (99602519209332).

Almost surely, 2^{199205038418663} is an apocalyptic number.

199205038418663 is a deficient number, since it is larger than the sum of its proper divisors (1).

199205038418663 is an equidigital number, since it uses as much as digits as its factorization.

199205038418663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67184640, while the sum is 65.

The spelling of 199205038418663 in words is "one hundred ninety-nine trillion, two hundred five billion, thirty-eight million, four hundred eighteen thousand, six hundred sixty-three".