16544124161 has 2 divisors, whose sum is σ = 16544124162. Its totient is φ = 16544124160.

The previous prime is 16544124137. The next prime is 16544124199. The reversal of 16544124161 is 16142144561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11144813761 + 5399310400 = 105569^2 + 73480^2 .

It is an emirp because it is prime and its reverse (16142144561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16544124161 - 2¹⁸ = 16543862017 is a prime.

It is not a weakly prime, because it can be changed into another prime (16544124461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272062080 + 8272062081.

It is an arithmetic number, because the mean of its divisors is an integer number (8272062081).

Almost surely, 2^16544124161 is an apocalyptic number.

It is an amenable number.

16544124161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16544124161 is an equidigital number, since it uses as much as digits as its factorization.

16544124161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The spelling of 16544124161 in words is "sixteen billion, five hundred forty-four million, one hundred twenty-four thousand, one hundred sixty-one".