66188316133 has 16 divisors (see below), whose sum is σ = 68672481280. Its totient is φ = 63741396096.

The previous prime is 66188316121. The next prime is 66188316193. The reversal of 66188316133 is 33161388166.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66188316133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66188316113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10884988 + ... + 10891066.

It is an arithmetic number, because the mean of its divisors is an integer number (4292030080).

Almost surely, 2^66188316133 is an apocalyptic number.

It is an amenable number.

66188316133 is a deficient number, since it is larger than the sum of its proper divisors (2484165147).

66188316133 is a wasteful number, since it uses less digits than its factorization.

66188316133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9076.

The product of its digits is 373248, while the sum is 46.

The spelling of 66188316133 in words is "sixty-six billion, one hundred eighty-eight million, three hundred sixteen thousand, one hundred thirty-three".