13550105449 has 2 divisors, whose sum is σ = 13550105450. Its totient is φ = 13550105448.

The previous prime is 13550105431. The next prime is 13550105453. The reversal of 13550105449 is 94450105531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13326393600 + 223711849 = 115440^2 + 14957^2 .

It is an emirp because it is prime and its reverse (94450105531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13550105449 - 2⁷ = 13550105321 is a prime.

It is not a weakly prime, because it can be changed into another prime (13550100449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6775052724 + 6775052725.

It is an arithmetic number, because the mean of its divisors is an integer number (6775052725).

Almost surely, 2^13550105449 is an apocalyptic number.

It is an amenable number.

13550105449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13550105449 is an equidigital number, since it uses as much as digits as its factorization.

13550105449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 13550105449 in words is "thirteen billion, five hundred fifty million, one hundred five thousand, four hundred forty-nine".