16424455049 has 2 divisors, whose sum is σ = 16424455050. Its totient is φ = 16424455048.

The previous prime is 16424455039. The next prime is 16424455081. The reversal of 16424455049 is 94055442461.

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., 14924287225 + 1500167824 = 122165^2 + 38732^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16424455049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16424455039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8212227524 + 8212227525.

It is an arithmetic number, because the mean of its divisors is an integer number (8212227525).

Almost surely, 2^16424455049 is an apocalyptic number.

It is an amenable number.

16424455049 is a deficient number, since it is larger than the sum of its proper divisors (1).

16424455049 is an equidigital number, since it uses as much as digits as its factorization.

16424455049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 16424455049 in words is "sixteen billion, four hundred twenty-four million, four hundred fifty-five thousand, forty-nine".