16850538673 has 2 divisors, whose sum is σ = 16850538674. Its totient is φ = 16850538672.

The previous prime is 16850538667. The next prime is 16850538697. The reversal of 16850538673 is 37683505861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14954110369 + 1896428304 = 122287^2 + 43548^2 .

It is an emirp because it is prime and its reverse (37683505861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16850538673 - 2¹³ = 16850530481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16850538673.

It is not a weakly prime, because it can be changed into another prime (16850538773) 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, 8425269336 + 8425269337.

It is an arithmetic number, because the mean of its divisors is an integer number (8425269337).

Almost surely, 2^16850538673 is an apocalyptic number.

It is an amenable number.

16850538673 is a deficient number, since it is larger than the sum of its proper divisors (1).

16850538673 is an equidigital number, since it uses as much as digits as its factorization.

16850538673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 16850538673 in words is "sixteen billion, eight hundred fifty million, five hundred thirty-eight thousand, six hundred seventy-three".