16344021043 has 4 divisors (see below), whose sum is σ = 18678881200. Its totient is φ = 14009160888.

The previous prime is 16344020947. The next prime is 16344021047. The reversal of 16344021043 is 34012044361.

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 16344021043 - 2⁹ = 16344020531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16344021047) 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, 1167430068 + ... + 1167430081.

It is an arithmetic number, because the mean of its divisors is an integer number (4669720300).

Almost surely, 2^16344021043 is an apocalyptic number.

16344021043 is a deficient number, since it is larger than the sum of its proper divisors (2334860157).

16344021043 is an equidigital number, since it uses as much as digits as its factorization.

16344021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334860156.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 16344021043 in words is "sixteen billion, three hundred forty-four million, twenty-one thousand, forty-three".