16455443161 has 4 divisors (see below), whose sum is σ = 16458757092. Its totient is φ = 16452129232.

The previous prime is 16455443087. The next prime is 16455443177. The reversal of 16455443161 is 16134455461.

16455443161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16134455461 = 39439 ⋅409099.

It can be written as a sum of positive squares in 2 ways, for example, as 14778049225 + 1677393936 = 121565^2 + 40956^2 .

It is a cyclic number.

It is not a de Polignac number, because 16455443161 - 2³¹ = 14307959513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16455443761) 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 in 3 ways as a sum of consecutive naturals, for example, 1649506 + ... + 1659451.

It is an arithmetic number, because the mean of its divisors is an integer number (4114689273).

Almost surely, 2^16455443161 is an apocalyptic number.

It is an amenable number.

16455443161 is a deficient number, since it is larger than the sum of its proper divisors (3313931).

16455443161 is an equidigital number, since it uses as much as digits as its factorization.

16455443161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3313930.

The product of its digits is 172800, while the sum is 40.

The spelling of 16455443161 in words is "sixteen billion, four hundred fifty-five million, four hundred forty-three thousand, one hundred sixty-one".