16690516933 has 2 divisors, whose sum is σ = 16690516934. Its totient is φ = 16690516932.

The previous prime is 16690516919. The next prime is 16690516949. The reversal of 16690516933 is 33961509661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10720945764 + 5969571169 = 103542^2 + 77263^2 .

It is an emirp because it is prime and its reverse (33961509661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16690516933 - 2²⁹ = 16153646021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16690516133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8345258466 + 8345258467.

It is an arithmetic number, because the mean of its divisors is an integer number (8345258467).

Almost surely, 2^16690516933 is an apocalyptic number.

It is an amenable number.

16690516933 is a deficient number, since it is larger than the sum of its proper divisors (1).

16690516933 is an equidigital number, since it uses as much as digits as its factorization.

16690516933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 49.

The spelling of 16690516933 in words is "sixteen billion, six hundred ninety million, five hundred sixteen thousand, nine hundred thirty-three".