20424400204204 has 24 divisors (see below), whose sum is σ = 36027686435328. Its totient is φ = 10130791345920.

The previous prime is 20424400204189. The next prime is 20424400204237. The reversal of 20424400204204 is 40240200442402.

It is a super-2 number, since 2×20424400204204² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3197412 + ... + 7146484.

It is an arithmetic number, because the mean of its divisors is an integer number (1501153601472).

Almost surely, 2^{20424400204204} is an apocalyptic number.

It is an amenable number.

20424400204204 is a deficient number, since it is larger than the sum of its proper divisors (15603286231124).

20424400204204 is a wasteful number, since it uses less digits than its factorization.

20424400204204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959385 (or 3959383 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20424400204204 its reverse (40240200442402), we get a palindrome (60664600646606).

The spelling of 20424400204204 in words is "twenty trillion, four hundred twenty-four billion, four hundred million, two hundred four thousand, two hundred four".