6565896765049 has 2 divisors, whose sum is σ = 6565896765050. Its totient is φ = 6565896765048.

The previous prime is 6565896765023. The next prime is 6565896765067. The reversal of 6565896765049 is 9405676985656.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6290224513024 + 275672252025 = 2508032^2 + 525045^2 .

It is a cyclic number.

It is not a de Polignac number, because 6565896765049 - 2³³ = 6557306830457 is a prime.

It is a super-2 number, since 2×6565896765049² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6565896765089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282948382524 + 3282948382525.

It is an arithmetic number, because the mean of its divisors is an integer number (3282948382525).

Almost surely, 2^{6565896765049} is an apocalyptic number.

It is an amenable number.

6565896765049 is a deficient number, since it is larger than the sum of its proper divisors (1).

6565896765049 is an equidigital number, since it uses as much as digits as its factorization.

6565896765049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328000, while the sum is 76.

The spelling of 6565896765049 in words is "six trillion, five hundred sixty-five billion, eight hundred ninety-six million, seven hundred sixty-five thousand, forty-nine".