8344865513 has 2 divisors, whose sum is σ = 8344865514. Its totient is φ = 8344865512.

The previous prime is 8344865489. The next prime is 8344865533. The reversal of 8344865513 is 3155684438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7883131369 + 461734144 = 88787^2 + 21488^2 .

It is a cyclic number.

It is not a de Polignac number, because 8344865513 - 2¹⁶ = 8344799977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8344865533) 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, 4172432756 + 4172432757.

It is an arithmetic number, because the mean of its divisors is an integer number (4172432757).

Almost surely, 2^8344865513 is an apocalyptic number.

It is an amenable number.

8344865513 is a deficient number, since it is larger than the sum of its proper divisors (1).

8344865513 is an equidigital number, since it uses as much as digits as its factorization.

8344865513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 47.

The square root of 8344865513 is about 91350.2354293627. The cubic root of 8344865513 is about 2028.3354480694.

The spelling of 8344865513 in words is "eight billion, three hundred forty-four million, eight hundred sixty-five thousand, five hundred thirteen".