11426251409 has 2 divisors, whose sum is σ = 11426251410. Its totient is φ = 11426251408.

The previous prime is 11426251387. The next prime is 11426251423. The reversal of 11426251409 is 90415262411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10829524225 + 596727184 = 104065^2 + 24428^2 .

It is a cyclic number.

It is not a de Polignac number, because 11426251409 - 2¹⁶ = 11426185873 is a prime.

It is not a weakly prime, because it can be changed into another prime (11426251439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5713125704 + 5713125705.

It is an arithmetic number, because the mean of its divisors is an integer number (5713125705).

Almost surely, 2^11426251409 is an apocalyptic number.

It is an amenable number.

11426251409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11426251409 is an equidigital number, since it uses as much as digits as its factorization.

11426251409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 11426251409 in words is "eleven billion, four hundred twenty-six million, two hundred fifty-one thousand, four hundred nine".