8318666668137 has 48 divisors (see below), whose sum is σ = 12917411573760. Its totient is φ = 4748004716448.

The previous prime is 8318666668133. The next prime is 8318666668183. The reversal of 8318666668137 is 7318666668138.

It is not a de Polignac number, because 8318666668137 - 2² = 8318666668133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8318666668133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 490971088 + ... + 490988030.

It is an arithmetic number, because the mean of its divisors is an integer number (269112741120).

Almost surely, 2^{8318666668137} is an apocalyptic number.

It is an amenable number.

8318666668137 is a deficient number, since it is larger than the sum of its proper divisors (4598744905623).

8318666668137 is a wasteful number, since it uses less digits than its factorization.

8318666668137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20642 (or 20635 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 69.

Subtracting from 8318666668137 its reverse (7318666668138), we obtain a palindrome (999999999999).

The spelling of 8318666668137 in words is "eight trillion, three hundred eighteen billion, six hundred sixty-six million, six hundred sixty-eight thousand, one hundred thirty-seven".