12128523138752 has 14 divisors (see below), whose sum is σ = 24067538103588. Its totient is φ = 6064261569344.

The previous prime is 12128523138737. The next prime is 12128523138757. The reversal of 12128523138752 is 25783132582121.

It is a self number, because there is not a number n which added to its sum of digits gives 12128523138752.

It is not an unprimeable number, because it can be changed into a prime (12128523138757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94754086958 + ... + 94754087085.

It is an arithmetic number, because the mean of its divisors is an integer number (1719109864542).

Almost surely, 2^{12128523138752} is an apocalyptic number.

It is an amenable number.

12128523138752 is a deficient number, since it is larger than the sum of its proper divisors (11939014964836).

12128523138752 is an equidigital number, since it uses as much as digits as its factorization.

12128523138752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189508174055 (or 189508174045 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The spelling of 12128523138752 in words is "twelve trillion, one hundred twenty-eight billion, five hundred twenty-three million, one hundred thirty-eight thousand, seven hundred fifty-two".