65164439513 has 2 divisors, whose sum is σ = 65164439514. Its totient is φ = 65164439512.

The previous prime is 65164439453. The next prime is 65164439537. The reversal of 65164439513 is 31593446156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46504059904 + 18660379609 = 215648^2 + 136603^2 .

It is a cyclic number.

It is not a de Polignac number, because 65164439513 - 2⁶ = 65164439449 is a prime.

It is not a weakly prime, because it can be changed into another prime (65164439573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32582219756 + 32582219757.

It is an arithmetic number, because the mean of its divisors is an integer number (32582219757).

Almost surely, 2^65164439513 is an apocalyptic number.

It is an amenable number.

65164439513 is a deficient number, since it is larger than the sum of its proper divisors (1).

65164439513 is an equidigital number, since it uses as much as digits as its factorization.

65164439513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The spelling of 65164439513 in words is "sixty-five billion, one hundred sixty-four million, four hundred thirty-nine thousand, five hundred thirteen".