16334199997 has 2 divisors, whose sum is σ = 16334199998. Its totient is φ = 16334199996.

The previous prime is 16334199991. The next prime is 16334200013. The reversal of 16334199997 is 79999143361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9076182361 + 7258017636 = 95269^2 + 85194^2 .

It is a cyclic number.

It is not a de Polignac number, because 16334199997 - 2²⁷ = 16199982269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16334199991) 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, 8167099998 + 8167099999.

It is an arithmetic number, because the mean of its divisors is an integer number (8167099999).

Almost surely, 2^16334199997 is an apocalyptic number.

It is an amenable number.

16334199997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16334199997 is an equidigital number, since it uses as much as digits as its factorization.

16334199997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 61.

The spelling of 16334199997 in words is "sixteen billion, three hundred thirty-four million, one hundred ninety-nine thousand, nine hundred ninety-seven".