42844069799 has 4 divisors (see below), whose sum is σ = 42844523736. Its totient is φ = 42843615864.

The previous prime is 42844069787. The next prime is 42844069819. The reversal of 42844069799 is 99796044824.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42844069799 is a prime.

It is a super-2 number, since 2×42844069799² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42844069729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26189 + ... + 293894.

It is an arithmetic number, because the mean of its divisors is an integer number (10711130934).

Almost surely, 2^42844069799 is an apocalyptic number.

42844069799 is a deficient number, since it is larger than the sum of its proper divisors (453937).

42844069799 is a wasteful number, since it uses less digits than its factorization.

42844069799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453936.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 42844069799 in words is "forty-two billion, eight hundred forty-four million, sixty-nine thousand, seven hundred ninety-nine".