16939100161 has 2 divisors, whose sum is σ = 16939100162. Its totient is φ = 16939100160.

The previous prime is 16939100141. The next prime is 16939100173. The reversal of 16939100161 is 16100193961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14384404225 + 2554695936 = 119935^2 + 50544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16939100161 is a prime.

It is a super-2 number, since 2×16939100161² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16939100161.

It is not a weakly prime, because it can be changed into another prime (16939100141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8469550080 + 8469550081.

It is an arithmetic number, because the mean of its divisors is an integer number (8469550081).

Almost surely, 2^16939100161 is an apocalyptic number.

It is an amenable number.

16939100161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16939100161 is an equidigital number, since it uses as much as digits as its factorization.

16939100161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 16939100161 in words is "sixteen billion, nine hundred thirty-nine million, one hundred thousand, one hundred sixty-one".