66596883313 has 4 divisors (see below), whose sum is σ = 66599778420. Its totient is φ = 66593988208.

The previous prime is 66596883293. The next prime is 66596883323. The reversal of 66596883313 is 31338869566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31338869566 = 2 ⋅15669434783.

It can be written as a sum of positive squares in 2 ways, for example, as 39321700209 + 27275183104 = 198297^2 + 165152^2 .

It is a cyclic number.

It is not a de Polignac number, because 66596883313 - 2⁹ = 66596882801 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66596883323) 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, 1412770 + ... + 1459147.

It is an arithmetic number, because the mean of its divisors is an integer number (16649944605).

Almost surely, 2^66596883313 is an apocalyptic number.

It is an amenable number.

66596883313 is a deficient number, since it is larger than the sum of its proper divisors (2895107).

66596883313 is a wasteful number, since it uses less digits than its factorization.

66596883313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895106.

The product of its digits is 16796160, while the sum is 58.

The spelling of 66596883313 in words is "sixty-six billion, five hundred ninety-six million, eight hundred eighty-three thousand, three hundred thirteen".