66002517288 has 96 divisors (see below), whose sum is σ = 184990408200. Its totient is φ = 21234200064.

The previous prime is 66002517271. The next prime is 66002517311. The reversal of 66002517288 is 88271520066.

66002517288 is a `hidden beast` number, since 6 + 600 + 2 + 5 + 17 + 28 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 56616395364 + 9386121924 = 237942^2 + 96882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8375206 + ... + 8383082.

Almost surely, 2^66002517288 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 66002517288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92495204100).

66002517288 is an abundant number, since it is smaller than the sum of its proper divisors (118987890912).

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

66002517288 is a wasteful number, since it uses less digits than its factorization.

66002517288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11931 (or 11924 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 66002517288 in words is "sixty-six billion, two million, five hundred seventeen thousand, two hundred eighty-eight".