16800066161 has 2 divisors, whose sum is σ = 16800066162. Its totient is φ = 16800066160.

The previous prime is 16800066131. The next prime is 16800066167. The reversal of 16800066161 is 16166000861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9767566561 + 7032499600 = 98831^2 + 83860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16800066161 is a prime.

It is not a weakly prime, because it can be changed into another prime (16800066167) 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, 8400033080 + 8400033081.

It is an arithmetic number, because the mean of its divisors is an integer number (8400033081).

Almost surely, 2^16800066161 is an apocalyptic number.

It is an amenable number.

16800066161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16800066161 is an equidigital number, since it uses as much as digits as its factorization.

16800066161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 16800066161 in words is "sixteen billion, eight hundred million, sixty-six thousand, one hundred sixty-one".