20404313204 has 12 divisors (see below), whose sum is σ = 38953688928. Its totient is φ = 9274687800.

The previous prime is 20404313183. The next prime is 20404313221. The reversal of 20404313204 is 40231340402.

It is a self number, because there is not a number n which added to its sum of digits gives 20404313204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231867152 + ... + 231867239.

It is an arithmetic number, because the mean of its divisors is an integer number (3246140744).

Almost surely, 2^20404313204 is an apocalyptic number.

It is an amenable number.

20404313204 is a deficient number, since it is larger than the sum of its proper divisors (18549375724).

20404313204 is a wasteful number, since it uses less digits than its factorization.

20404313204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463734406 (or 463734404 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20404313204 its reverse (40231340402), we get a palindrome (60635653606).

The spelling of 20404313204 in words is "twenty billion, four hundred four million, three hundred thirteen thousand, two hundred four".