16439802073 has 2 divisors, whose sum is σ = 16439802074. Its totient is φ = 16439802072.

The previous prime is 16439802059. The next prime is 16439802089. The reversal of 16439802073 is 37020893461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16425754569 + 14047504 = 128163^2 + 3748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16439802073 is a prime.

It is not a weakly prime, because it can be changed into another prime (16439802173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8219901036 + 8219901037.

It is an arithmetic number, because the mean of its divisors is an integer number (8219901037).

Almost surely, 2^16439802073 is an apocalyptic number.

It is an amenable number.

16439802073 is a deficient number, since it is larger than the sum of its proper divisors (1).

16439802073 is an equidigital number, since it uses as much as digits as its factorization.

16439802073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 16439802073 in words is "sixteen billion, four hundred thirty-nine million, eight hundred two thousand, seventy-three".