66652168818 has 32 divisors (see below), whose sum is σ = 133914646080. Its totient is φ = 22115903040.

The previous prime is 66652168769. The next prime is 66652168861. The reversal of 66652168818 is 81886125666.

It is a happy number.

66652168818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141068 + ... + 1198056.

It is an arithmetic number, because the mean of its divisors is an integer number (4184832690).

Almost surely, 2^66652168818 is an apocalyptic number.

66652168818 is an abundant number, since it is smaller than the sum of its proper divisors (67262477262).

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

66652168818 is a wasteful number, since it uses less digits than its factorization.

66652168818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57882.

The product of its digits is 6635520, while the sum is 57.

The spelling of 66652168818 in words is "sixty-six billion, six hundred fifty-two million, one hundred sixty-eight thousand, eight hundred eighteen".