20816330044 has 12 divisors (see below), whose sum is σ = 38012428944. Its totient is φ = 9955636064.

The previous prime is 20816329993. The next prime is 20816330063. The reversal of 20816330044 is 44003361802.

It is a junction number, because it is equal to n+sod(n) for n = 20816329988 and 20816330015.

It is a congruent number.

It is an unprimeable number.

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, 113132137 + ... + 113132320.

It is an arithmetic number, because the mean of its divisors is an integer number (3167702412).

Almost surely, 2^20816330044 is an apocalyptic number.

It is an amenable number.

20816330044 is a deficient number, since it is larger than the sum of its proper divisors (17196098900).

20816330044 is a wasteful number, since it uses less digits than its factorization.

20816330044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226264484 (or 226264482 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 20816330044 its reverse (44003361802), we get a palindrome (64819691846).

The spelling of 20816330044 in words is "twenty billion, eight hundred sixteen million, three hundred thirty thousand, forty-four".