66330730610818 has 64 divisors (see below), whose sum is σ = 105429169520640. Its totient is φ = 31235077355328.

The previous prime is 66330730610789. The next prime is 66330730610861. The reversal of 66330730610818 is 81801603703366.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465428855 + ... + 1465474117.

It is an arithmetic number, because the mean of its divisors is an integer number (1647330773760).

Almost surely, 2^{66330730610818} is an apocalyptic number.

66330730610818 is a deficient number, since it is larger than the sum of its proper divisors (39098438909822).

66330730610818 is a wasteful number, since it uses less digits than its factorization.

66330730610818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46663.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 66330730610818 in words is "sixty-six trillion, three hundred thirty billion, seven hundred thirty million, six hundred ten thousand, eight hundred eighteen".