16721504106 has 8 divisors (see below), whose sum is σ = 33443008224. Its totient is φ = 5573834700.

The previous prime is 16721504071. The next prime is 16721504119. The reversal of 16721504106 is 60140512761.

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

16721504106 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1393458670 + ... + 1393458681.

It is an arithmetic number, because the mean of its divisors is an integer number (4180376028).

Almost surely, 2^16721504106 is an apocalyptic number.

16721504106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16721504106 is a wasteful number, since it uses less digits than its factorization.

16721504106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786917356.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 16721504106 in words is "sixteen billion, seven hundred twenty-one million, five hundred four thousand, one hundred six".