65566313357 has 2 divisors, whose sum is σ = 65566313358. Its totient is φ = 65566313356.

The previous prime is 65566313299. The next prime is 65566313359. The reversal of 65566313357 is 75331366556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50651553481 + 14914759876 = 225059^2 + 122126^2 .

It is a cyclic number.

It is not a de Polignac number, because 65566313357 - 2⁸ = 65566313101 is a prime.

It is a super-3 number, since 3×65566313357³ (a number of 33 digits) contains 333 as substring.

Together with 65566313359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65566313359) 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, 32783156678 + 32783156679.

It is an arithmetic number, because the mean of its divisors is an integer number (32783156679).

Almost surely, 2^65566313357 is an apocalyptic number.

It is an amenable number.

65566313357 is a deficient number, since it is larger than the sum of its proper divisors (1).

65566313357 is an equidigital number, since it uses as much as digits as its factorization.

65566313357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5103000, while the sum is 50.

The spelling of 65566313357 in words is "sixty-five billion, five hundred sixty-six million, three hundred thirteen thousand, three hundred fifty-seven".