12489513791 has 2 divisors, whose sum is σ = 12489513792. Its totient is φ = 12489513790.

The previous prime is 12489513683. The next prime is 12489513877. The reversal of 12489513791 is 19731598421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12489513791 - 2¹⁰ = 12489512767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12489513391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6244756895 + 6244756896.

It is an arithmetic number, because the mean of its divisors is an integer number (6244756896).

Almost surely, 2^12489513791 is an apocalyptic number.

12489513791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12489513791 is an equidigital number, since it uses as much as digits as its factorization.

12489513791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 50.

The spelling of 12489513791 in words is "twelve billion, four hundred eighty-nine million, five hundred thirteen thousand, seven hundred ninety-one".