65665150216 has 16 divisors (see below), whose sum is σ = 123135061500. Its totient is φ = 32829133824.

The previous prime is 65665150163. The next prime is 65665150217. The reversal of 65665150216 is 61205156656.

65665150216 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 2 ways, for example, as 59314654116 + 6350496100 = 243546^2 + 79690^2 .

It is not an unprimeable number, because it can be changed into a prime (65665150217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348145 + ... + 502528.

Almost surely, 2^65665150216 is an apocalyptic number.

It is an amenable number.

65665150216 is a deficient number, since it is larger than the sum of its proper divisors (57469911284).

65665150216 is a wasteful number, since it uses less digits than its factorization.

65665150216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860328 (or 860324 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 65665150216 in words is "sixty-five billion, six hundred sixty-five million, one hundred fifty thousand, two hundred sixteen".