66285702323568 has 960 divisors, whose sum is σ = 236940641971200. Its totient is φ = 17372320542720.

The previous prime is 66285702323531. The next prime is 66285702323593. The reversal of 66285702323568 is 86532320758266.

It is a happy number.

66285702323568 is a `hidden beast` number, since 6 + 6 + 2 + 8 + 570 + 2 + 3 + 2 + 3 + 56 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 100280941158 + ... + 100280941818.

It is an arithmetic number, because the mean of its divisors is an integer number (246813168720).

Almost surely, 2^{66285702323568} 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 66285702323568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118470320985600).

66285702323568 is an abundant number, since it is smaller than the sum of its proper divisors (170654939647632).

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

66285702323568 is a wasteful number, since it uses less digits than its factorization.

66285702323568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 174182400, while the sum is 63.

The spelling of 66285702323568 in words is "sixty-six trillion, two hundred eighty-five billion, seven hundred two million, three hundred twenty-three thousand, five hundred sixty-eight".