16920899161 has 2 divisors, whose sum is σ = 16920899162. Its totient is φ = 16920899160.

The previous prime is 16920899131. The next prime is 16920899201. The reversal of 16920899161 is 16199802961.

It is a happy number.

16920899161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12767870025 + 4153029136 = 112995^2 + 64444^2 .

It is an emirp because it is prime and its reverse (16199802961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16920899161 - 2¹³ = 16920890969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16920899099 and 16920899108.

It is not a weakly prime, because it can be changed into another prime (16920899131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8460449580 + 8460449581.

It is an arithmetic number, because the mean of its divisors is an integer number (8460449581).

Almost surely, 2^16920899161 is an apocalyptic number.

It is an amenable number.

16920899161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16920899161 is an equidigital number, since it uses as much as digits as its factorization.

16920899161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 52.

The spelling of 16920899161 in words is "sixteen billion, nine hundred twenty million, eight hundred ninety-nine thousand, one hundred sixty-one".