16891122943 has 2 divisors, whose sum is σ = 16891122944. Its totient is φ = 16891122942.

The previous prime is 16891122889. The next prime is 16891122947. The reversal of 16891122943 is 34922119861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16891122943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16891122893 and 16891122902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16891122947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445561471 + 8445561472.

It is an arithmetic number, because the mean of its divisors is an integer number (8445561472).

Almost surely, 2^16891122943 is an apocalyptic number.

16891122943 is a deficient number, since it is larger than the sum of its proper divisors (1).

16891122943 is an equidigital number, since it uses as much as digits as its factorization.

16891122943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The spelling of 16891122943 in words is "sixteen billion, eight hundred ninety-one million, one hundred twenty-two thousand, nine hundred forty-three".