65615016168 has 160 divisors (see below), whose sum is σ = 202748321160. Its totient is φ = 19696711680.

The previous prime is 65615016149. The next prime is 65615016191. The reversal of 65615016168 is 86161051656.

65615016168 is a `hidden beast` number, since 6 + 5 + 615 + 0 + 16 + 16 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 37658507364 + 27956508804 = 194058^2 + 167202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 250396 + ... + 440372.

Almost surely, 2^65615016168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65615016168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101374160580).

65615016168 is an abundant number, since it is smaller than the sum of its proper divisors (137133304992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65615016168 is a wasteful number, since it uses less digits than its factorization.

65615016168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190049 (or 190036 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 65615016168 in words is "sixty-five billion, six hundred fifteen million, sixteen thousand, one hundred sixty-eight".