666210316113 has 6 divisors (see below), whose sum is σ = 962303789954. Its totient is φ = 444140210736.

The previous prime is 666210316087. The next prime is 666210316127. The reversal of 666210316113 is 311613012666.

It can be written as a sum of positive squares in only one way, i.e., 538973285904 + 127237030209 = 734148^2 + 356703^2 .

It is not a de Polignac number, because 666210316113 - 2¹⁶ = 666210250577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666210316613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37011684220 + ... + 37011684237.

Almost surely, 2^666210316113 is an apocalyptic number.

It is an amenable number.

666210316113 is a deficient number, since it is larger than the sum of its proper divisors (296093473841).

666210316113 is a wasteful number, since it uses less digits than its factorization.

666210316113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74023368463 (or 74023368460 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

Adding to 666210316113 its reverse (311613012666), we get a palindrome (977823328779).

The spelling of 666210316113 in words is "six hundred sixty-six billion, two hundred ten million, three hundred sixteen thousand, one hundred thirteen".