66880000196 has 12 divisors (see below), whose sum is σ = 117191415852. Its totient is φ = 33396738528.

The previous prime is 66880000193. The next prime is 66880000223. The reversal of 66880000196 is 69100008866.

66880000196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2348759296 + 64531240900 = 48464^2 + 254030^2 .

It is not an unprimeable number, because it can be changed into a prime (66880000193) 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, 10811915 + ... + 10818098.

It is an arithmetic number, because the mean of its divisors is an integer number (9765951321).

Almost surely, 2^66880000196 is an apocalyptic number.

It is an amenable number.

66880000196 is a deficient number, since it is larger than the sum of its proper divisors (50311415656).

66880000196 is a wasteful number, since it uses less digits than its factorization.

66880000196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21630790 (or 21630788 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 66880000196 in words is "sixty-six billion, eight hundred eighty million, one hundred ninety-six", and thus it is an aban number.