66882160816 has 40 divisors (see below), whose sum is σ = 133126816640. Its totient is φ = 32527401984.

The previous prime is 66882160799. The next prime is 66882160819. The reversal of 66882160816 is 61806128866.

66882160816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66882160819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2173345 + ... + 2203903.

It is an arithmetic number, because the mean of its divisors is an integer number (3328170416).

Almost surely, 2^66882160816 is an apocalyptic number.

It is an amenable number.

66882160816 is a deficient number, since it is larger than the sum of its proper divisors (66244655824).

66882160816 is a wasteful number, since it uses less digits than its factorization.

66882160816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34301 (or 34295 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The spelling of 66882160816 in words is "sixty-six billion, eight hundred eighty-two million, one hundred sixty thousand, eight hundred sixteen".