20042004404 has 12 divisors (see below), whose sum is σ = 35219042628. Its totient is φ = 9979420800.

The previous prime is 20042004397. The next prime is 20042004407. The reversal of 20042004404 is 40440024002.

It can be written as a sum of positive squares in 2 ways, for example, as 18225540004 + 1816464400 = 135002^2 + 42620^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20042004407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10394267 + ... + 10396194.

It is an arithmetic number, because the mean of its divisors is an integer number (2934920219).

Almost surely, 2^20042004404 is an apocalyptic number.

It is an amenable number.

20042004404 is a deficient number, since it is larger than the sum of its proper divisors (15177038224).

20042004404 is a wasteful number, since it uses less digits than its factorization.

20042004404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20790706 (or 20790704 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20042004404 its reverse (40440024002), we get a palindrome (60482028406).

The spelling of 20042004404 in words is "twenty billion, forty-two million, four thousand, four hundred four".