66191810182 has 8 divisors (see below), whose sum is σ = 99288819216. Its totient is φ = 33095537112.

The previous prime is 66191810149. The next prime is 66191810183. The reversal of 66191810182 is 28101819166.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66191810183) 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, 207228 + ... + 418720.

It is an arithmetic number, because the mean of its divisors is an integer number (12411102402).

Almost surely, 2^66191810182 is an apocalyptic number.

66191810182 is a deficient number, since it is larger than the sum of its proper divisors (33097009034).

66191810182 is a wasteful number, since it uses less digits than its factorization.

66191810182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367982.

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 66191810182 in words is "sixty-six billion, one hundred ninety-one million, eight hundred ten thousand, one hundred eighty-two".