16043243423 has 4 divisors (see below), whose sum is σ = 16048457040. Its totient is φ = 16038029808.

The previous prime is 16043243399. The next prime is 16043243431. The reversal of 16043243423 is 32434234061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32434234061 = 1787 ⋅18150103.

It is a cyclic number.

It is not a de Polignac number, because 16043243423 - 2²² = 16039049119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16043243423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16043243453) 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, 2602190 + ... + 2608347.

It is an arithmetic number, because the mean of its divisors is an integer number (4012114260).

Almost surely, 2^16043243423 is an apocalyptic number.

16043243423 is a deficient number, since it is larger than the sum of its proper divisors (5213617).

16043243423 is an equidigital number, since it uses as much as digits as its factorization.

16043243423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213616.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 16043243423 its reverse (32434234061), we get a palindrome (48477477484).

The spelling of 16043243423 in words is "sixteen billion, forty-three million, two hundred forty-three thousand, four hundred twenty-three".