16947559666463 has 16 divisors (see below), whose sum is σ = 17905151416320. Its totient is φ = 16008530565984.

The previous prime is 16947559666447. The next prime is 16947559666489. The reversal of 16947559666463 is 36466695574961.

It is a cyclic number.

It is not a de Polignac number, because 16947559666463 - 2⁴ = 16947559666447 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 (16947559666403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2551058 + ... + 6356336.

It is an arithmetic number, because the mean of its divisors is an integer number (1119071963520).

Almost surely, 2^{16947559666463} is an apocalyptic number.

16947559666463 is a deficient number, since it is larger than the sum of its proper divisors (957591749857).

16947559666463 is a wasteful number, since it uses less digits than its factorization.

16947559666463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3807718.

The product of its digits is 5290790400, while the sum is 77.

The spelling of 16947559666463 in words is "sixteen trillion, nine hundred forty-seven billion, five hundred fifty-nine million, six hundred sixty-six thousand, four hundred sixty-three".