65688057653 has 2 divisors, whose sum is σ = 65688057654. Its totient is φ = 65688057652.

The previous prime is 65688057641. The next prime is 65688057671. The reversal of 65688057653 is 35675088656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37416325489 + 28271732164 = 193433^2 + 168142^2 .

It is a cyclic number.

It is not a de Polignac number, because 65688057653 - 2¹⁴ = 65688041269 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65688057592 and 65688057601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65688057683) 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, 32844028826 + 32844028827.

It is an arithmetic number, because the mean of its divisors is an integer number (32844028827).

Almost surely, 2^65688057653 is an apocalyptic number.

It is an amenable number.

65688057653 is a deficient number, since it is larger than the sum of its proper divisors (1).

65688057653 is an equidigital number, since it uses as much as digits as its factorization.

65688057653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288000, while the sum is 59.

The spelling of 65688057653 in words is "sixty-five billion, six hundred eighty-eight million, fifty-seven thousand, six hundred fifty-three".