66622490186 has 8 divisors (see below), whose sum is σ = 114209983200. Its totient is φ = 28552495788.

The previous prime is 66622490183. The next prime is 66622490237. The reversal of 66622490186 is 68109422666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (66622490183) 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, 2379374636 + ... + 2379374663.

It is an arithmetic number, because the mean of its divisors is an integer number (14276247900).

Almost surely, 2^66622490186 is an apocalyptic number.

66622490186 is a deficient number, since it is larger than the sum of its proper divisors (47587493014).

66622490186 is a wasteful number, since it uses less digits than its factorization.

66622490186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758749308.

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 66622490186 in words is "sixty-six billion, six hundred twenty-two million, four hundred ninety thousand, one hundred eighty-six".