16564641716752 has 20 divisors (see below), whose sum is σ = 32546021403456. Its totient is φ = 8165668451360.

The previous prime is 16564641716747. The next prime is 16564641716809. The reversal of 16564641716752 is 25761714646561.

It is a happy 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, 7290774268 + ... + 7290776539.

Almost surely, 2^{16564641716752} is an apocalyptic number.

It is an amenable number.

16564641716752 is a deficient number, since it is larger than the sum of its proper divisors (15981379686704).

16564641716752 is a wasteful number, since it uses less digits than its factorization.

16564641716752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14581550886 (or 14581550880 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 16564641716752 in words is "sixteen trillion, five hundred sixty-four billion, six hundred forty-one million, seven hundred sixteen thousand, seven hundred fifty-two".