14509777409 has 2 divisors, whose sum is σ = 14509777410. Its totient is φ = 14509777408.

The previous prime is 14509777397. The next prime is 14509777427. The reversal of 14509777409 is 90477790541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14438425600 + 71351809 = 120160^2 + 8447^2 .

It is a cyclic number.

It is not a de Polignac number, because 14509777409 - 2⁴ = 14509777393 is a prime.

It is not a weakly prime, because it can be changed into another prime (14509777489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7254888704 + 7254888705.

It is an arithmetic number, because the mean of its divisors is an integer number (7254888705).

Almost surely, 2^14509777409 is an apocalyptic number.

It is an amenable number.

14509777409 is a deficient number, since it is larger than the sum of its proper divisors (1).

14509777409 is an equidigital number, since it uses as much as digits as its factorization.

14509777409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 14509777409 in words is "fourteen billion, five hundred nine million, seven hundred seventy-seven thousand, four hundred nine".