16317643445 has 16 divisors (see below), whose sum is σ = 20594207232. Its totient is φ = 12394649280.

The previous prime is 16317643427. The next prime is 16317643451. The reversal of 16317643445 is 54434671361.

It is not a de Polignac number, because 16317643445 - 2⁸ = 16317643189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16317643396 and 16317643405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 984947 + ... + 1001376.

It is an arithmetic number, because the mean of its divisors is an integer number (1287137952).

Almost surely, 2^16317643445 is an apocalyptic number.

It is an amenable number.

16317643445 is a deficient number, since it is larger than the sum of its proper divisors (4276563787).

16317643445 is a wasteful number, since it uses less digits than its factorization.

16317643445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986412.

The product of its digits is 725760, while the sum is 44.

The spelling of 16317643445 in words is "sixteen billion, three hundred seventeen million, six hundred forty-three thousand, four hundred forty-five".