20204202204 has 18 divisors (see below), whose sum is σ = 51071733440. Its totient is φ = 6734734056.

The previous prime is 20204202199. The next prime is 20204202251. The reversal of 20204202204 is 40220240202.

20204202204 is a `hidden beast` number, since 2 + 0 + 20 + 420 + 220 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280613884 + ... + 280613955.

Almost surely, 2^20204202204 is an apocalyptic number.

It is an amenable number.

20204202204 is an abundant number, since it is smaller than the sum of its proper divisors (30867531236).

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

20204202204 is a wasteful number, since it uses less digits than its factorization.

20204202204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561227849 (or 561227844 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20204202204 its reverse (40220240202), we get a palindrome (60424442406).

The spelling of 20204202204 in words is "twenty billion, two hundred four million, two hundred two thousand, two hundred four".