12128514539 has 2 divisors, whose sum is σ = 12128514540. Its totient is φ = 12128514538.

The previous prime is 12128514533. The next prime is 12128514599. The reversal of 12128514539 is 93541582121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12128514539 - 2²⁸ = 11860079083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12128514496 and 12128514505.

It is not a weakly prime, because it can be changed into another prime (12128514533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6064257269 + 6064257270.

It is an arithmetic number, because the mean of its divisors is an integer number (6064257270).

Almost surely, 2^12128514539 is an apocalyptic number.

12128514539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12128514539 is an equidigital number, since it uses as much as digits as its factorization.

12128514539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The spelling of 12128514539 in words is "twelve billion, one hundred twenty-eight million, five hundred fourteen thousand, five hundred thirty-nine".