2616321569 has 2 divisors, whose sum is σ = 2616321570. Its totient is φ = 2616321568.

The previous prime is 2616321563. The next prime is 2616321571. The reversal of 2616321569 is 9651236162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2566435600 + 49885969 = 50660^2 + 7063^2 .

It is a cyclic number.

It is not a de Polignac number, because 2616321569 - 2¹⁶ = 2616256033 is a prime.

It is a super-2 number, since 2×2616321569² = 13690277104829243522, which contains 22 as substring.

Together with 2616321571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2616321563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1308160784 + 1308160785.

It is an arithmetic number, because the mean of its divisors is an integer number (1308160785).

Almost surely, 2^2616321569 is an apocalyptic number.

It is an amenable number.

2616321569 is a deficient number, since it is larger than the sum of its proper divisors (1).

2616321569 is an equidigital number, since it uses as much as digits as its factorization.

2616321569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 2616321569 is about 51149.9908993149. The cubic root of 2616321569 is about 1377.9402108857.

The spelling of 2616321569 in words is "two billion, six hundred sixteen million, three hundred twenty-one thousand, five hundred sixty-nine".