16721501016 has 64 divisors (see below), whose sum is σ = 46055692800. Its totient is φ = 5016944000.

The previous prime is 16721501003. The next prime is 16721501021. The reversal of 16721501016 is 61010512761.

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, 286896 + ... + 340223.

It is an arithmetic number, because the mean of its divisors is an integer number (719620200).

Almost surely, 2^16721501016 is an apocalyptic number.

It is an amenable number.

16721501016 is an abundant number, since it is smaller than the sum of its proper divisors (29334191784).

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

16721501016 is a wasteful number, since it uses less digits than its factorization.

16721501016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627240 (or 627236 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The spelling of 16721501016 in words is "sixteen billion, seven hundred twenty-one million, five hundred one thousand, sixteen".