65942422309 has 2 divisors, whose sum is σ = 65942422310. Its totient is φ = 65942422308.

The previous prime is 65942422193. The next prime is 65942422313. The reversal of 65942422309 is 90322424956.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60452056900 + 5490365409 = 245870^2 + 74097^2 .

It is a cyclic number.

It is not a de Polignac number, because 65942422309 - 2¹¹ = 65942420261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65942422349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32971211154 + 32971211155.

It is an arithmetic number, because the mean of its divisors is an integer number (32971211155).

Almost surely, 2^65942422309 is an apocalyptic number.

It is an amenable number.

65942422309 is a deficient number, since it is larger than the sum of its proper divisors (1).

65942422309 is an equidigital number, since it uses as much as digits as its factorization.

65942422309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 65942422309 in words is "sixty-five billion, nine hundred forty-two million, four hundred twenty-two thousand, three hundred nine".