65909609323 has 4 divisors (see below), whose sum is σ = 65912274160. Its totient is φ = 65906944488.

The previous prime is 65909609317. The next prime is 65909609351. The reversal of 65909609323 is 32390690956.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65909609323 - 2⁵ = 65909609291 is a prime.

It is a super-2 number, since 2×65909609323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65909619323) 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 in 3 ways as a sum of consecutive naturals, for example, 1294968 + ... + 1344901.

It is an arithmetic number, because the mean of its divisors is an integer number (16478068540).

Almost surely, 2^65909609323 is an apocalyptic number.

65909609323 is a deficient number, since it is larger than the sum of its proper divisors (2664837).

65909609323 is a wasteful number, since it uses less digits than its factorization.

65909609323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664836.

The product of its (nonzero) digits is 2361960, while the sum is 52.

The spelling of 65909609323 in words is "sixty-five billion, nine hundred nine million, six hundred nine thousand, three hundred twenty-three".