65018238036065 has 4 divisors (see below), whose sum is σ = 78021885643284. Its totient is φ = 52014590428848.

The previous prime is 65018238036041. The next prime is 65018238036071. The reversal of 65018238036065 is 56063083281056.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24671655241249 + 40346582794816 = 4967057^2 + 6351896^2 .

It is a cyclic number.

It is not a de Polignac number, because 65018238036065 - 2²⁰ = 65018236987489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65018238035998 and 65018238036016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6501823803602 + ... + 6501823803611.

It is an arithmetic number, because the mean of its divisors is an integer number (19505471410821).

Almost surely, 2^{65018238036065} is an apocalyptic number.

It is an amenable number.

65018238036065 is a deficient number, since it is larger than the sum of its proper divisors (13003647607219).

65018238036065 is a wasteful number, since it uses less digits than its factorization.

65018238036065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13003647607218.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 65018238036065 in words is "sixty-five trillion, eighteen billion, two hundred thirty-eight million, thirty-six thousand, sixty-five".