65708099609 has 2 divisors, whose sum is σ = 65708099610. Its totient is φ = 65708099608.

The previous prime is 65708099603. The next prime is 65708099669. The reversal of 65708099609 is 90699080756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65537536009 + 170563600 = 256003^2 + 13060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65708099609 is a prime.

It is not a weakly prime, because it can be changed into another prime (65708099603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32854049804 + 32854049805.

It is an arithmetic number, because the mean of its divisors is an integer number (32854049805).

Almost surely, 2^65708099609 is an apocalyptic number.

It is an amenable number.

65708099609 is a deficient number, since it is larger than the sum of its proper divisors (1).

65708099609 is an equidigital number, since it uses as much as digits as its factorization.

65708099609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The spelling of 65708099609 in words is "sixty-five billion, seven hundred eight million, ninety-nine thousand, six hundred nine".