16213805161 has 2 divisors, whose sum is σ = 16213805162. Its totient is φ = 16213805160.

The previous prime is 16213805159. The next prime is 16213805177. The reversal of 16213805161 is 16150831261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14781939561 + 1431865600 = 121581^2 + 37840^2 .

It is a cyclic number.

It is not a de Polignac number, because 16213805161 - 2¹ = 16213805159 is a prime.

Together with 16213805159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16213802161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106902580 + 8106902581.

It is an arithmetic number, because the mean of its divisors is an integer number (8106902581).

Almost surely, 2^16213805161 is an apocalyptic number.

It is an amenable number.

16213805161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16213805161 is an equidigital number, since it uses as much as digits as its factorization.

16213805161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 16213805161 in words is "sixteen billion, two hundred thirteen million, eight hundred five thousand, one hundred sixty-one".