16509852199 has 2 divisors, whose sum is σ = 16509852200. Its totient is φ = 16509852198.

The previous prime is 16509852143. The next prime is 16509852223. The reversal of 16509852199 is 99125890561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16509852199 - 2⁷ = 16509852071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16509862199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8254926099 + 8254926100.

It is an arithmetic number, because the mean of its divisors is an integer number (8254926100).

Almost surely, 2^16509852199 is an apocalyptic number.

16509852199 is a deficient number, since it is larger than the sum of its proper divisors (1).

16509852199 is an equidigital number, since it uses as much as digits as its factorization.

16509852199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 55.

The spelling of 16509852199 in words is "sixteen billion, five hundred nine million, eight hundred fifty-two thousand, one hundred ninety-nine".