16844389043 has 4 divisors (see below), whose sum is σ = 17576753808. Its totient is φ = 16112024280.

The previous prime is 16844389031. The next prime is 16844389057. The reversal of 16844389043 is 34098344861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16844389043 - 2²⁸ = 16575953587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16844388982 and 16844389000.

It is not an unprimeable number, because it can be changed into a prime (16844389843) 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, 366182348 + ... + 366182393.

It is an arithmetic number, because the mean of its divisors is an integer number (4394188452).

Almost surely, 2^16844389043 is an apocalyptic number.

16844389043 is a deficient number, since it is larger than the sum of its proper divisors (732364765).

16844389043 is an equidigital number, since it uses as much as digits as its factorization.

16844389043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732364764.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 16844389043 in words is "sixteen billion, eight hundred forty-four million, three hundred eighty-nine thousand, forty-three".