16544454103 has 4 divisors (see below), whose sum is σ = 16549424248. Its totient is φ = 16539483960.

The previous prime is 16544454089. The next prime is 16544454107. The reversal of 16544454103 is 30145444561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30145444561 = 29573 ⋅1019357.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16544454103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16544454107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2480076 + ... + 2486737.

It is an arithmetic number, because the mean of its divisors is an integer number (4137356062).

Almost surely, 2^16544454103 is an apocalyptic number.

16544454103 is a deficient number, since it is larger than the sum of its proper divisors (4970145).

16544454103 is an equidigital number, since it uses as much as digits as its factorization.

16544454103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970144.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 16544454103 its reverse (30145444561), we get a palindrome (46689898664).

The spelling of 16544454103 in words is "sixteen billion, five hundred forty-four million, four hundred fifty-four thousand, one hundred three".