13666373138507 has 2 divisors, whose sum is σ = 13666373138508. Its totient is φ = 13666373138506.

The previous prime is 13666373138501. The next prime is 13666373138527. The reversal of 13666373138507 is 70583137366631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13666373138507 - 2⁴ = 13666373138491 is a prime.

It is not a weakly prime, because it can be changed into another prime (13666373138501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6833186569253 + 6833186569254.

It is an arithmetic number, because the mean of its divisors is an integer number (6833186569254).

Almost surely, 2^{13666373138507} is an apocalyptic number.

13666373138507 is a deficient number, since it is larger than the sum of its proper divisors (1).

13666373138507 is an equidigital number, since it uses as much as digits as its factorization.

13666373138507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 59.

The spelling of 13666373138507 in words is "thirteen trillion, six hundred sixty-six billion, three hundred seventy-three million, one hundred thirty-eight thousand, five hundred seven".