16344844369 has 4 divisors (see below), whose sum is σ = 18679822144. Its totient is φ = 14009866596.

The previous prime is 16344844343. The next prime is 16344844441. The reversal of 16344844369 is 96344844361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96344844361 = 9539 ⋅10100099.

It is a cyclic number.

It is not a de Polignac number, because 16344844369 - 2⁹ = 16344843857 is a prime.

It is a super-2 number, since 2×16344844369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16344844169) 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, 1167488877 + ... + 1167488890.

It is an arithmetic number, because the mean of its divisors is an integer number (4669955536).

Almost surely, 2^16344844369 is an apocalyptic number.

It is an amenable number.

16344844369 is a deficient number, since it is larger than the sum of its proper divisors (2334977775).

16344844369 is an equidigital number, since it uses as much as digits as its factorization.

16344844369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334977774.

The product of its digits is 5971968, while the sum is 52.

The spelling of 16344844369 in words is "sixteen billion, three hundred forty-four million, eight hundred forty-four thousand, three hundred sixty-nine".