20401404044 has 48 divisors (see below), whose sum is σ = 41093918208. Its totient is φ = 8681188608.

The previous prime is 20401403993. The next prime is 20401404073. The reversal of 20401404044 is 44040410402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7040804 + ... + 7043700.

It is an arithmetic number, because the mean of its divisors is an integer number (856123296).

Almost surely, 2^20401404044 is an apocalyptic number.

It is an amenable number.

20401404044 is an abundant number, since it is smaller than the sum of its proper divisors (20692514164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20401404044 is a wasteful number, since it uses less digits than its factorization.

20401404044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614 (or 4612 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20401404044 its reverse (44040410402), we get a palindrome (64441814446).

The spelling of 20401404044 in words is "twenty billion, four hundred one million, four hundred four thousand, forty-four".