16623694859 has 8 divisors (see below), whose sum is σ = 16665751440. Its totient is φ = 16581666816.

The previous prime is 16623694823. The next prime is 16623694931. The reversal of 16623694859 is 95849632661.

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

It is a cyclic number.

It is not a de Polignac number, because 16623694859 - 2²⁰ = 16622646283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16623694798 and 16623694807.

It is not an unprimeable number, because it can be changed into a prime (16623624859) 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, 1598027 + ... + 1608395.

It is an arithmetic number, because the mean of its divisors is an integer number (2083218930).

Almost surely, 2^16623694859 is an apocalyptic number.

16623694859 is a deficient number, since it is larger than the sum of its proper divisors (42056581).

16623694859 is a wasteful number, since it uses less digits than its factorization.

16623694859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14269.

The product of its digits is 16796160, while the sum is 59.

The spelling of 16623694859 in words is "sixteen billion, six hundred twenty-three million, six hundred ninety-four thousand, eight hundred fifty-nine".