65140223009 has 2 divisors, whose sum is σ = 65140223010. Its totient is φ = 65140223008.

The previous prime is 65140222967. The next prime is 65140223069. The reversal of 65140223009 is 90032204156.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59719140625 + 5421082384 = 244375^2 + 73628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65140223009 is a prime.

It is not a weakly prime, because it can be changed into another prime (65140223069) 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, 32570111504 + 32570111505.

It is an arithmetic number, because the mean of its divisors is an integer number (32570111505).

Almost surely, 2^65140223009 is an apocalyptic number.

It is an amenable number.

65140223009 is a deficient number, since it is larger than the sum of its proper divisors (1).

65140223009 is an equidigital number, since it uses as much as digits as its factorization.

65140223009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 65140223009 in words is "sixty-five billion, one hundred forty million, two hundred twenty-three thousand, nine".