65517432769 has 2 divisors, whose sum is σ = 65517432770. Its totient is φ = 65517432768.

The previous prime is 65517432709. The next prime is 65517432779. The reversal of 65517432769 is 96723471556.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48248319025 + 17269113744 = 219655^2 + 131412^2 .

It is a cyclic number.

It is not a de Polignac number, because 65517432769 - 2¹⁵ = 65517400001 is a prime.

It is a super-2 number, since 2×65517432769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (65517432709) 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, 32758716384 + 32758716385.

It is an arithmetic number, because the mean of its divisors is an integer number (32758716385).

Almost surely, 2^65517432769 is an apocalyptic number.

It is an amenable number.

65517432769 is a deficient number, since it is larger than the sum of its proper divisors (1).

65517432769 is an equidigital number, since it uses as much as digits as its factorization.

65517432769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9525600, while the sum is 55.

The spelling of 65517432769 in words is "sixty-five billion, five hundred seventeen million, four hundred thirty-two thousand, seven hundred sixty-nine".