16632611321 has 8 divisors (see below), whose sum is σ = 16659949824. Its totient is φ = 16605293760.

The previous prime is 16632611293. The next prime is 16632611341. The reversal of 16632611321 is 12311623661.

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-16632611321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16632611341) 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, 2434316 + ... + 2441138.

It is an arithmetic number, because the mean of its divisors is an integer number (2082493728).

Almost surely, 2^16632611321 is an apocalyptic number.

It is an amenable number.

16632611321 is a deficient number, since it is larger than the sum of its proper divisors (27338503).

16632611321 is an equidigital number, since it uses as much as digits as its factorization.

16632611321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10471.

The product of its digits is 7776, while the sum is 32.

The spelling of 16632611321 in words is "sixteen billion, six hundred thirty-two million, six hundred eleven thousand, three hundred twenty-one".