16804353443 has 16 divisors (see below), whose sum is σ = 17945608320. Its totient is φ = 15680587776.

The previous prime is 16804353359. The next prime is 16804353451. The reversal of 16804353443 is 34435340861.

It is a cyclic number.

It is not a de Polignac number, because 16804353443 - 2²⁰ = 16803304867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16804353443.

It is not an unprimeable number, because it can be changed into a prime (16804353463) 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 in 15 ways as a sum of consecutive naturals, for example, 1071563 + ... + 1087131.

It is an arithmetic number, because the mean of its divisors is an integer number (1121600520).

Almost surely, 2^16804353443 is an apocalyptic number.

16804353443 is a deficient number, since it is larger than the sum of its proper divisors (1141254877).

16804353443 is a wasteful number, since it uses less digits than its factorization.

16804353443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126.

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 16804353443 in words is "sixteen billion, eight hundred four million, three hundred fifty-three thousand, four hundred forty-three".