16720333716 has 24 divisors (see below), whose sum is σ = 41067486880. Its totient is φ = 5280105312.

The previous prime is 16720333703. The next prime is 16720333723. The reversal of 16720333716 is 61733302761.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36667171 + ... + 36667626.

Almost surely, 2^16720333716 is an apocalyptic number.

It is an amenable number.

16720333716 is an abundant number, since it is smaller than the sum of its proper divisors (24347153164).

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

16720333716 is a wasteful number, since it uses less digits than its factorization.

16720333716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73334823 (or 73334821 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The spelling of 16720333716 in words is "sixteen billion, seven hundred twenty million, three hundred thirty-three thousand, seven hundred sixteen".