16691760823 has 2 divisors, whose sum is σ = 16691760824. Its totient is φ = 16691760822.

The previous prime is 16691760791. The next prime is 16691760847. The reversal of 16691760823 is 32806719661.

It is a strong prime.

It is an emirp because it is prime and its reverse (32806719661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16691760823 - 2⁵ = 16691760791 is a prime.

It is a super-2 number, since 2×16691760823² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16691760863) 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, 8345880411 + 8345880412.

It is an arithmetic number, because the mean of its divisors is an integer number (8345880412).

Almost surely, 2^16691760823 is an apocalyptic number.

16691760823 is a deficient number, since it is larger than the sum of its proper divisors (1).

16691760823 is an equidigital number, since it uses as much as digits as its factorization.

16691760823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 16691760823 in words is "sixteen billion, six hundred ninety-one million, seven hundred sixty thousand, eight hundred twenty-three".