13138267666571 has 2 divisors, whose sum is σ = 13138267666572. Its totient is φ = 13138267666570.

The previous prime is 13138267666561. The next prime is 13138267666607. The reversal of 13138267666571 is 17566676283131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13138267666571 is a prime.

It is a super-2 number, since 2×13138267666571² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13138267666561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6569133833285 + 6569133833286.

It is an arithmetic number, because the mean of its divisors is an integer number (6569133833286).

Almost surely, 2^{13138267666571} is an apocalyptic number.

13138267666571 is a deficient number, since it is larger than the sum of its proper divisors (1).

13138267666571 is an equidigital number, since it uses as much as digits as its factorization.

13138267666571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 62.

The spelling of 13138267666571 in words is "thirteen trillion, one hundred thirty-eight billion, two hundred sixty-seven million, six hundred sixty-six thousand, five hundred seventy-one".