16716216607 has 4 divisors (see below), whose sum is σ = 16718186896. Its totient is φ = 16714246320.

The previous prime is 16716216563. The next prime is 16716216623. The reversal of 16716216607 is 70661261761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16716216607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16716216007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972363 + ... + 989404.

It is an arithmetic number, because the mean of its divisors is an integer number (4179546724).

Almost surely, 2^16716216607 is an apocalyptic number.

16716216607 is a deficient number, since it is larger than the sum of its proper divisors (1970289).

16716216607 is an equidigital number, since it uses as much as digits as its factorization.

16716216607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970288.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 16716216607 in words is "sixteen billion, seven hundred sixteen million, two hundred sixteen thousand, six hundred seven".