16966431017 has 4 divisors (see below), whose sum is σ = 17054340180. Its totient is φ = 16878521856.

The previous prime is 16966430981. The next prime is 16966431019. The reversal of 16966431017 is 71013466961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71013466961 = 773 ⋅91867357.

It can be written as a sum of positive squares in 2 ways, for example, as 6948222736 + 10018208281 = 83356^2 + 100091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16966431017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16966431019) 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, 43954292 + ... + 43954677.

It is an arithmetic number, because the mean of its divisors is an integer number (4263585045).

Almost surely, 2^16966431017 is an apocalyptic number.

It is an amenable number.

16966431017 is a deficient number, since it is larger than the sum of its proper divisors (87909163).

16966431017 is an equidigital number, since it uses as much as digits as its factorization.

16966431017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87909162.

The product of its (nonzero) digits is 163296, while the sum is 44.

Adding to 16966431017 its reverse (71013466961), we get a palindrome (87979897978).

The spelling of 16966431017 in words is "sixteen billion, nine hundred sixty-six million, four hundred thirty-one thousand, seventeen".