16724324621 has 8 divisors (see below), whose sum is σ = 17509474080. Its totient is φ = 15953071792.

The previous prime is 16724324597. The next prime is 16724324629. The reversal of 16724324621 is 12642342761.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16724324621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16724324629) 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, 3471695 + ... + 3476508.

It is an arithmetic number, because the mean of its divisors is an integer number (2188684260).

Almost surely, 2^16724324621 is an apocalyptic number.

It is an amenable number.

16724324621 is a deficient number, since it is larger than the sum of its proper divisors (785149459).

16724324621 is an equidigital number, since it uses as much as digits as its factorization.

16724324621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6948315.

The product of its digits is 96768, while the sum is 38.

The spelling of 16724324621 in words is "sixteen billion, seven hundred twenty-four million, three hundred twenty-four thousand, six hundred twenty-one".