16724433445 has 4 divisors (see below), whose sum is σ = 20069320140. Its totient is φ = 13379546752.

The previous prime is 16724433437. The next prime is 16724433449. The reversal of 16724433445 is 54433442761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4071333249 + 12653100196 = 63807^2 + 112486^2 .

It is a cyclic number.

It is not a de Polignac number, because 16724433445 - 2³ = 16724433437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16724433449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672443340 + ... + 1672443349.

It is an arithmetic number, because the mean of its divisors is an integer number (5017330035).

Almost surely, 2^16724433445 is an apocalyptic number.

It is an amenable number.

16724433445 is a deficient number, since it is larger than the sum of its proper divisors (3344886695).

16724433445 is an equidigital number, since it uses as much as digits as its factorization.

16724433445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344886694.

The product of its digits is 967680, while the sum is 43.

The spelling of 16724433445 in words is "sixteen billion, seven hundred twenty-four million, four hundred thirty-three thousand, four hundred forty-five".