20401004404 has 24 divisors (see below), whose sum is σ = 38956796928. Its totient is φ = 9270939840.

The previous prime is 20401004357. The next prime is 20401004423. The reversal of 20401004404 is 40440010402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135117 + ... + 243019.

It is an arithmetic number, because the mean of its divisors is an integer number (1623199872).

Almost surely, 2^20401004404 is an apocalyptic number.

It is an amenable number.

20401004404 is a deficient number, since it is larger than the sum of its proper divisors (18555792524).

20401004404 is a wasteful number, since it uses less digits than its factorization.

20401004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112215 (or 112213 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20401004404 its reverse (40440010402), we get a palindrome (60841014806).

The spelling of 20401004404 in words is "twenty billion, four hundred one million, four thousand, four hundred four".