13124243122409 has 2 divisors, whose sum is σ = 13124243122410. Its totient is φ = 13124243122408.

The previous prime is 13124243122339. The next prime is 13124243122427. The reversal of 13124243122409 is 90422134242131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8153149258384 + 4971093864025 = 2855372^2 + 2229595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13124243122409 is a prime.

It is not a weakly prime, because it can be changed into another prime (13124243122609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562121561204 + 6562121561205.

It is an arithmetic number, because the mean of its divisors is an integer number (6562121561205).

Almost surely, 2^{13124243122409} is an apocalyptic number.

It is an amenable number.

13124243122409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124243122409 is an equidigital number, since it uses as much as digits as its factorization.

13124243122409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 13124243122409 in words is "thirteen trillion, one hundred twenty-four billion, two hundred forty-three million, one hundred twenty-two thousand, four hundred nine".