16704144409 has 2 divisors, whose sum is σ = 16704144410. Its totient is φ = 16704144408.

The previous prime is 16704144397. The next prime is 16704144433. The reversal of 16704144409 is 90444140761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16107417225 + 596727184 = 126915^2 + 24428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16704144409 is a prime.

It is not a weakly prime, because it can be changed into another prime (16701144409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8352072204 + 8352072205.

It is an arithmetic number, because the mean of its divisors is an integer number (8352072205).

Almost surely, 2^16704144409 is an apocalyptic number.

It is an amenable number.

16704144409 is a deficient number, since it is larger than the sum of its proper divisors (1).

16704144409 is an equidigital number, since it uses as much as digits as its factorization.

16704144409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 16704144409 in words is "sixteen billion, seven hundred four million, one hundred forty-four thousand, four hundred nine".