16464242489 has 2 divisors, whose sum is σ = 16464242490. Its totient is φ = 16464242488.

The previous prime is 16464242453. The next prime is 16464242563. The reversal of 16464242489 is 98424246461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16298862889 + 165379600 = 127667^2 + 12860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16464242489 is a prime.

It is not a weakly prime, because it can be changed into another prime (16464242419) 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, 8232121244 + 8232121245.

It is an arithmetic number, because the mean of its divisors is an integer number (8232121245).

Almost surely, 2^16464242489 is an apocalyptic number.

It is an amenable number.

16464242489 is a deficient number, since it is larger than the sum of its proper divisors (1).

16464242489 is an equidigital number, since it uses as much as digits as its factorization.

16464242489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2654208, while the sum is 50.

The spelling of 16464242489 in words is "sixteen billion, four hundred sixty-four million, two hundred forty-two thousand, four hundred eighty-nine".