66557012830316 has 12 divisors (see below), whose sum is σ = 116474890650888. Its totient is φ = 33278472644352.

The previous prime is 66557012830313. The next prime is 66557012830337. The reversal of 66557012830316 is 61303821075566.

It is not an unprimeable number, because it can be changed into a prime (66557012830313) 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, 3714026 + ... + 12120561.

It is an arithmetic number, because the mean of its divisors is an integer number (9706240887574).

Almost surely, 2^{66557012830316} is an apocalyptic number.

It is an amenable number.

66557012830316 is a deficient number, since it is larger than the sum of its proper divisors (49917877820572).

66557012830316 is a wasteful number, since it uses less digits than its factorization.

66557012830316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16885408 (or 16885406 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 66557012830316 in words is "sixty-six trillion, five hundred fifty-seven billion, twelve million, eight hundred thirty thousand, three hundred sixteen".