13128138939239 has 2 divisors, whose sum is σ = 13128138939240. Its totient is φ = 13128138939238.

The previous prime is 13128138939229. The next prime is 13128138939257. The reversal of 13128138939239 is 93293983182131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13128138939239 - 2³⁶ = 13059419462503 is a prime.

It is a super-2 number, since 2×13128138939239² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13128138939229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564069469619 + 6564069469620.

It is an arithmetic number, because the mean of its divisors is an integer number (6564069469620).

Almost surely, 2^{13128138939239} is an apocalyptic number.

13128138939239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13128138939239 is an equidigital number, since it uses as much as digits as its factorization.

13128138939239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 62.

The spelling of 13128138939239 in words is "thirteen trillion, one hundred twenty-eight billion, one hundred thirty-eight million, nine hundred thirty-nine thousand, two hundred thirty-nine".