16647111664 has 10 divisors (see below), whose sum is σ = 32253778880. Its totient is φ = 8323555824.

The previous prime is 16647111661. The next prime is 16647111683. The reversal of 16647111664 is 46611174661.

It is a self number, because there is not a number n which added to its sum of digits gives 16647111664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16647111661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520222224 + ... + 520222255.

It is an arithmetic number, because the mean of its divisors is an integer number (3225377888).

Almost surely, 2^16647111664 is an apocalyptic number.

It is an amenable number.

16647111664 is a deficient number, since it is larger than the sum of its proper divisors (15606667216).

16647111664 is a wasteful number, since it uses less digits than its factorization.

16647111664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040444487 (or 1040444481 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The spelling of 16647111664 in words is "sixteen billion, six hundred forty-seven million, one hundred eleven thousand, six hundred sixty-four".