16647611417 has 2 divisors, whose sum is σ = 16647611418. Its totient is φ = 16647611416.

The previous prime is 16647611401. The next prime is 16647611447. The reversal of 16647611417 is 71411674661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8549591296 + 8098020121 = 92464^2 + 89989^2 .

It is a cyclic number.

It is not a de Polignac number, because 16647611417 - 2⁴ = 16647611401 is a prime.

It is not a weakly prime, because it can be changed into another prime (16647611447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8323805708 + 8323805709.

It is an arithmetic number, because the mean of its divisors is an integer number (8323805709).

Almost surely, 2^16647611417 is an apocalyptic number.

It is an amenable number.

16647611417 is a deficient number, since it is larger than the sum of its proper divisors (1).

16647611417 is an equidigital number, since it uses as much as digits as its factorization.

16647611417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The spelling of 16647611417 in words is "sixteen billion, six hundred forty-seven million, six hundred eleven thousand, four hundred seventeen".