65326791773 has 2 divisors, whose sum is σ = 65326791774. Its totient is φ = 65326791772.

The previous prime is 65326791731. The next prime is 65326791811. The reversal of 65326791773 is 37719762356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37683739129 + 27643052644 = 194123^2 + 166262^2 .

It is a cyclic number.

It is not a de Polignac number, because 65326791773 - 2¹⁶ = 65326726237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65326791373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32663395886 + 32663395887.

It is an arithmetic number, because the mean of its divisors is an integer number (32663395887).

Almost surely, 2^65326791773 is an apocalyptic number.

It is an amenable number.

65326791773 is a deficient number, since it is larger than the sum of its proper divisors (1).

65326791773 is an equidigital number, since it uses as much as digits as its factorization.

65326791773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10001880, while the sum is 56.

The spelling of 65326791773 in words is "sixty-five billion, three hundred twenty-six million, seven hundred ninety-one thousand, seven hundred seventy-three".