16163409569 has 2 divisors, whose sum is σ = 16163409570. Its totient is φ = 16163409568.

The previous prime is 16163409539. The next prime is 16163409601. The reversal of 16163409569 is 96590436161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12094500625 + 4068908944 = 109975^2 + 63788^2 .

It is a cyclic number.

It is not a de Polignac number, because 16163409569 - 2⁸ = 16163409313 is a prime.

It is a super-2 number, since 2×16163409569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16163409529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8081704784 + 8081704785.

It is an arithmetic number, because the mean of its divisors is an integer number (8081704785).

Almost surely, 2^16163409569 is an apocalyptic number.

It is an amenable number.

16163409569 is a deficient number, since it is larger than the sum of its proper divisors (1).

16163409569 is an equidigital number, since it uses as much as digits as its factorization.

16163409569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 16163409569 in words is "sixteen billion, one hundred sixty-three million, four hundred nine thousand, five hundred sixty-nine".