65683633616 has 10 divisors (see below), whose sum is σ = 127262040162. Its totient is φ = 32841816800.

The previous prime is 65683633571. The next prime is 65683633649. The reversal of 65683633616 is 61633638656.

65683633616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 61704547216 + 3979086400 = 248404^2 + 63080^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2052613535 + ... + 2052613566.

Almost surely, 2^65683633616 is an apocalyptic number.

It is an amenable number.

65683633616 is a deficient number, since it is larger than the sum of its proper divisors (61578406546).

65683633616 is a wasteful number, since it uses less digits than its factorization.

65683633616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105227109 (or 4105227103 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 53.

The spelling of 65683633616 in words is "sixty-five billion, six hundred eighty-three million, six hundred thirty-three thousand, six hundred sixteen".