12489532589 has 4 divisors (see below), whose sum is σ = 12489770460. Its totient is φ = 12489294720.

The previous prime is 12489532553. The next prime is 12489532607. The reversal of 12489532589 is 98523598421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98523598421 = 149971 ⋅656951.

It can be written as a sum of positive squares in 2 ways, for example, as 12175356964 + 314175625 = 110342^2 + 17725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12489532589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489532529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1574 + ... + 158055.

It is an arithmetic number, because the mean of its divisors is an integer number (3122442615).

Almost surely, 2^12489532589 is an apocalyptic number.

It is an amenable number.

12489532589 is a deficient number, since it is larger than the sum of its proper divisors (237871).

12489532589 is an equidigital number, since it uses as much as digits as its factorization.

12489532589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237870.

The product of its digits is 6220800, while the sum is 56.

The spelling of 12489532589 in words is "twelve billion, four hundred eighty-nine million, five hundred thirty-two thousand, five hundred eighty-nine".