65232648661 has 2 divisors, whose sum is σ = 65232648662. Its totient is φ = 65232648660.

The previous prime is 65232648647. The next prime is 65232648743. The reversal of 65232648661 is 16684623256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33596690436 + 31635958225 = 183294^2 + 177865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65232648661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65232648961) 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, 32616324330 + 32616324331.

It is an arithmetic number, because the mean of its divisors is an integer number (32616324331).

Almost surely, 2^65232648661 is an apocalyptic number.

It is an amenable number.

65232648661 is a deficient number, since it is larger than the sum of its proper divisors (1).

65232648661 is an equidigital number, since it uses as much as digits as its factorization.

65232648661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 49.

The spelling of 65232648661 in words is "sixty-five billion, two hundred thirty-two million, six hundred forty-eight thousand, six hundred sixty-one".