20400110044 has 12 divisors (see below), whose sum is σ = 35746381944. Its totient is φ = 10186858064.

The previous prime is 20400110033. The next prime is 20400110053. The reversal of 20400110044 is 44001100402.

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, 3295762 + ... + 3301945.

It is an arithmetic number, because the mean of its divisors is an integer number (2978865162).

Almost surely, 2^20400110044 is an apocalyptic number.

It is an amenable number.

20400110044 is a deficient number, since it is larger than the sum of its proper divisors (15346271900).

20400110044 is a wasteful number, since it uses less digits than its factorization.

20400110044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6598484 (or 6598482 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20400110044 its reverse (44001100402), we get a palindrome (64401210446).

The spelling of 20400110044 in words is "twenty billion, four hundred million, one hundred ten thousand, forty-four".