16564608013 has 2 divisors, whose sum is σ = 16564608014. Its totient is φ = 16564608012.

The previous prime is 16564607971. The next prime is 16564608017. The reversal of 16564608013 is 31080646561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16563175204 + 1432809 = 128698^2 + 1197^2 .

It is a cyclic number.

It is not a de Polignac number, because 16564608013 - 2¹⁷ = 16564476941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16564608017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8282304006 + 8282304007.

It is an arithmetic number, because the mean of its divisors is an integer number (8282304007).

Almost surely, 2^16564608013 is an apocalyptic number.

It is an amenable number.

16564608013 is a deficient number, since it is larger than the sum of its proper divisors (1).

16564608013 is an equidigital number, since it uses as much as digits as its factorization.

16564608013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 16564608013 in words is "sixteen billion, five hundred sixty-four million, six hundred eight thousand, thirteen".