12387112538089 has 3 divisors (see below), whose sum is σ = 12387116057623. Its totient is φ = 12387109018556.

The previous prime is 12387112538041. The next prime is 12387112538137. The reversal of 12387112538089 is 98083521178321.

It is a happy number.

The square root of 12387112538089 is 3519533.

It is a perfect power (a square), and thus also a powerful number.

12387112538089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (12387112538041) and next prime (12387112538137).

It can be written as a sum of positive squares in only one way, i.e., 2835872840025 + 9551239698064 = 1684005^2 + 3090508^2 .

It is not a de Polignac number, because 12387112538089 - 2²⁷ = 12386978320361 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12387112538039) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1759767 + ... + 5279299.

Almost surely, 2^{12387112538089} is an apocalyptic number.

12387112538089 is the 3519533-rd square number.

12387112538089 is the 1759767-th centered octagonal number.

It is an amenable number.

12387112538089 is a deficient number, since it is larger than the sum of its proper divisors (3519534).

12387112538089 is an frugal number, since it uses more digits than its factorization.

12387112538089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039066 (or 3519533 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 12387112538089 in words is "twelve trillion, three hundred eighty-seven billion, one hundred twelve million, five hundred thirty-eight thousand, eighty-nine".