12789541489 has 2 divisors, whose sum is σ = 12789541490. Its totient is φ = 12789541488.

The previous prime is 12789541433. The next prime is 12789541511. The reversal of 12789541489 is 98414598721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7664127025 + 5125414464 = 87545^2 + 71592^2 .

It is an emirp because it is prime and its reverse (98414598721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12789541489 - 2⁷ = 12789541361 is a prime.

It is not a weakly prime, because it can be changed into another prime (12789541409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6394770744 + 6394770745.

It is an arithmetic number, because the mean of its divisors is an integer number (6394770745).

Almost surely, 2^12789541489 is an apocalyptic number.

It is an amenable number.

12789541489 is a deficient number, since it is larger than the sum of its proper divisors (1).

12789541489 is an equidigital number, since it uses as much as digits as its factorization.

12789541489 is an evil number, because the sum of its binary digits is even.

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

The spelling of 12789541489 in words is "twelve billion, seven hundred eighty-nine million, five hundred forty-one thousand, four hundred eighty-nine".