13124612261 has 2 divisors, whose sum is σ = 13124612262. Its totient is φ = 13124612260.

The previous prime is 13124612239. The next prime is 13124612279. The reversal of 13124612261 is 16221642131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12294596161 + 830016100 = 110881^2 + 28810^2 .

It is a cyclic number.

It is not a de Polignac number, because 13124612261 - 2¹⁰ = 13124611237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13124611261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562306130 + 6562306131.

It is an arithmetic number, because the mean of its divisors is an integer number (6562306131).

Almost surely, 2^13124612261 is an apocalyptic number.

It is an amenable number.

13124612261 is a deficient number, since it is larger than the sum of its proper divisors (1).

13124612261 is an equidigital number, since it uses as much as digits as its factorization.

13124612261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The spelling of 13124612261 in words is "thirteen billion, one hundred twenty-four million, six hundred twelve thousand, two hundred sixty-one".