12461989747 has 2 divisors, whose sum is σ = 12461989748. Its totient is φ = 12461989746.

The previous prime is 12461989679. The next prime is 12461989759. The reversal of 12461989747 is 74798916421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12461989747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12461989691 and 12461989700.

It is not a weakly prime, because it can be changed into another prime (12461989777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6230994873 + 6230994874.

It is an arithmetic number, because the mean of its divisors is an integer number (6230994874).

Almost surely, 2^12461989747 is an apocalyptic number.

12461989747 is a deficient number, since it is larger than the sum of its proper divisors (1).

12461989747 is an equidigital number, since it uses as much as digits as its factorization.

12461989747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 58.

The spelling of 12461989747 in words is "twelve billion, four hundred sixty-one million, nine hundred eighty-nine thousand, seven hundred forty-seven".