16720465516 has 36 divisors (see below), whose sum is σ = 29634346224. Its totient is φ = 8254476160.

The previous prime is 16720465513. The next prime is 16720465547. The reversal of 16720465516 is 61556402761.

It is not an unprimeable number, because it can be changed into a prime (16720465513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52745790 + ... + 52746106.

It is an arithmetic number, because the mean of its divisors is an integer number (823176284).

Almost surely, 2^16720465516 is an apocalyptic number.

It is an amenable number.

16720465516 is a deficient number, since it is larger than the sum of its proper divisors (12913880708).

16720465516 is a wasteful number, since it uses less digits than its factorization.

16720465516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 16720465516 in words is "sixteen billion, seven hundred twenty million, four hundred sixty-five thousand, five hundred sixteen".