65316661373 has 2 divisors, whose sum is σ = 65316661374. Its totient is φ = 65316661372.

The previous prime is 65316661351. The next prime is 65316661379. The reversal of 65316661373 is 37316661356.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61671762244 + 3644899129 = 248338^2 + 60373^2 .

It is a cyclic number.

It is not a de Polignac number, because 65316661373 - 2¹⁰ = 65316660349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65316661379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32658330686 + 32658330687.

It is an arithmetic number, because the mean of its divisors is an integer number (32658330687).

Almost surely, 2^65316661373 is an apocalyptic number.

It is an amenable number.

65316661373 is a deficient number, since it is larger than the sum of its proper divisors (1).

65316661373 is an equidigital number, since it uses as much as digits as its factorization.

65316661373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224720, while the sum is 47.

The spelling of 65316661373 in words is "sixty-five billion, three hundred sixteen million, six hundred sixty-one thousand, three hundred seventy-three".