65711195609 has 2 divisors, whose sum is σ = 65711195610. Its totient is φ = 65711195608.

The previous prime is 65711195549. The next prime is 65711195611. The reversal of 65711195609 is 90659111756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65470480384 + 240715225 = 255872^2 + 15515^2 .

It is a cyclic number.

It is not a de Polignac number, because 65711195609 - 2²⁴ = 65694418393 is a prime.

It is a super-2 number, since 2×65711195609² (a number of 22 digits) contains 22 as substring.

Together with 65711195611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65711192609) 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, 32855597804 + 32855597805.

It is an arithmetic number, because the mean of its divisors is an integer number (32855597805).

Almost surely, 2^65711195609 is an apocalyptic number.

It is an amenable number.

65711195609 is a deficient number, since it is larger than the sum of its proper divisors (1).

65711195609 is an equidigital number, since it uses as much as digits as its factorization.

65711195609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 50.

The spelling of 65711195609 in words is "sixty-five billion, seven hundred eleven million, one hundred ninety-five thousand, six hundred nine".