17216667409 has 2 divisors, whose sum is σ = 17216667410. Its totient is φ = 17216667408.

The previous prime is 17216667373. The next prime is 17216667427. The reversal of 17216667409 is 90476661271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15376000000 + 1840667409 = 124000^2 + 42903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17216667409 is a prime.

It is not a weakly prime, because it can be changed into another prime (17216667109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8608333704 + 8608333705.

It is an arithmetic number, because the mean of its divisors is an integer number (8608333705).

Almost surely, 2^17216667409 is an apocalyptic number.

It is an amenable number.

17216667409 is a deficient number, since it is larger than the sum of its proper divisors (1).

17216667409 is an equidigital number, since it uses as much as digits as its factorization.

17216667409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 17216667409 in words is "seventeen billion, two hundred sixteen million, six hundred sixty-seven thousand, four hundred nine".