16344243861 has 8 divisors (see below), whose sum is σ = 23773445664. Its totient is φ = 9905602320.

The previous prime is 16344243857. The next prime is 16344243869. The reversal of 16344243861 is 16834244361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16344243861 - 2² = 16344243857 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16344243869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247640026 + ... + 247640091.

It is an arithmetic number, because the mean of its divisors is an integer number (2971680708).

Almost surely, 2^16344243861 is an apocalyptic number.

16344243861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16344243861 is a deficient number, since it is larger than the sum of its proper divisors (7429201803).

16344243861 is a wasteful number, since it uses less digits than its factorization.

16344243861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495280131.

The product of its digits is 331776, while the sum is 42.

The spelling of 16344243861 in words is "sixteen billion, three hundred forty-four million, two hundred forty-three thousand, eight hundred sixty-one".