20404504204 has 12 divisors (see below), whose sum is σ = 40809008464. Its totient is φ = 8744787504.

The previous prime is 20404504199. The next prime is 20404504223. The reversal of 20404504204 is 40240540402.

It is a happy number.

20404504204 is an admirable number.

It is a super-2 number, since 2×20404504204² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 364366119 + ... + 364366174.

Almost surely, 2^20404504204 is an apocalyptic number.

It is an amenable number.

20404504204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20404504204 is a wasteful number, since it uses less digits than its factorization.

20404504204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728732304 (or 728732302 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The spelling of 20404504204 in words is "twenty billion, four hundred four million, five hundred four thousand, two hundred four".