16424342449 has 2 divisors, whose sum is σ = 16424342450. Its totient is φ = 16424342448.

The previous prime is 16424342423. The next prime is 16424342483. The reversal of 16424342449 is 94424342461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9693780849 + 6730561600 = 98457^2 + 82040^2 .

It is a cyclic number.

It is not a de Polignac number, because 16424342449 - 2⁷ = 16424342321 is a prime.

It is not a weakly prime, because it can be changed into another prime (16424342749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212171224 + 8212171225.

It is an arithmetic number, because the mean of its divisors is an integer number (8212171225).

Almost surely, 2^16424342449 is an apocalyptic number.

It is an amenable number.

16424342449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16424342449 is an equidigital number, since it uses as much as digits as its factorization.

16424342449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 43.

The spelling of 16424342449 in words is "sixteen billion, four hundred twenty-four million, three hundred forty-two thousand, four hundred forty-nine".