65676995609 has 4 divisors (see below), whose sum is σ = 65677718016. Its totient is φ = 65676273204.

The previous prime is 65676995561. The next prime is 65676995617. The reversal of 65676995609 is 90659967656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65676995609 - 2⁸ = 65676995353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65676991609) 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, 201209 + ... + 414534.

It is an arithmetic number, because the mean of its divisors is an integer number (16419429504).

Almost surely, 2^65676995609 is an apocalyptic number.

It is an amenable number.

65676995609 is a deficient number, since it is larger than the sum of its proper divisors (722407).

65676995609 is a wasteful number, since it uses less digits than its factorization.

65676995609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722406.

The product of its (nonzero) digits is 165337200, while the sum is 68.

The spelling of 65676995609 in words is "sixty-five billion, six hundred seventy-six million, nine hundred ninety-five thousand, six hundred nine".