16947423664 has 20 divisors (see below), whose sum is σ = 32846942304. Its totient is φ = 8470793408.

The previous prime is 16947423631. The next prime is 16947423733. The reversal of 16947423664 is 46632474961.

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, 134107 + ... + 227770.

Almost surely, 2^16947423664 is an apocalyptic number.

It is an amenable number.

16947423664 is a deficient number, since it is larger than the sum of its proper divisors (15899518640).

16947423664 is a wasteful number, since it uses less digits than its factorization.

16947423664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364812 (or 364806 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 52.

The spelling of 16947423664 in words is "sixteen billion, nine hundred forty-seven million, four hundred twenty-three thousand, six hundred sixty-four".