16804391673 has 8 divisors (see below), whose sum is σ = 23585111200. Its totient is φ = 10613299968.

The previous prime is 16804391663. The next prime is 16804391687. The reversal of 16804391673 is 37619340861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16804391673 - 2¹⁰ = 16804390649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16804391663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147406888 + ... + 147407001.

It is an arithmetic number, because the mean of its divisors is an integer number (2948138900).

Almost surely, 2^16804391673 is an apocalyptic number.

It is an amenable number.

16804391673 is a deficient number, since it is larger than the sum of its proper divisors (6780719527).

16804391673 is a wasteful number, since it uses less digits than its factorization.

16804391673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294813911.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 16804391673 in words is "sixteen billion, eight hundred four million, three hundred ninety-one thousand, six hundred seventy-three".