16643466163 has 4 divisors (see below), whose sum is σ = 16647603160. Its totient is φ = 16639329168.

The previous prime is 16643466137. The next prime is 16643466193. The reversal of 16643466163 is 36166434661.

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-16643466163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16643466113) 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, 2062458 + ... + 2070511.

It is an arithmetic number, because the mean of its divisors is an integer number (4161900790).

Almost surely, 2^16643466163 is an apocalyptic number.

16643466163 is a deficient number, since it is larger than the sum of its proper divisors (4136997).

16643466163 is an equidigital number, since it uses as much as digits as its factorization.

16643466163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136996.

The product of its digits is 1119744, while the sum is 46.

The spelling of 16643466163 in words is "sixteen billion, six hundred forty-three million, four hundred sixty-six thousand, one hundred sixty-three".