16808572903 has 2 divisors, whose sum is σ = 16808572904. Its totient is φ = 16808572902.

The previous prime is 16808572901. The next prime is 16808572939. The reversal of 16808572903 is 30927580861.

It is a weak prime.

It is an emirp because it is prime and its reverse (30927580861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16808572903 - 2¹ = 16808572901 is a prime.

Together with 16808572901, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16808572901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8404286451 + 8404286452.

It is an arithmetic number, because the mean of its divisors is an integer number (8404286452).

Almost surely, 2^16808572903 is an apocalyptic number.

16808572903 is a deficient number, since it is larger than the sum of its proper divisors (1).

16808572903 is an equidigital number, since it uses as much as digits as its factorization.

16808572903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 16808572903 in words is "sixteen billion, eight hundred eight million, five hundred seventy-two thousand, nine hundred three".