204012311420 has 12 divisors (see below), whose sum is σ = 428425854024. Its totient is φ = 81604924560.

The previous prime is 204012311413. The next prime is 204012311441. The reversal of 204012311420 is 24113210402.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10200615571 = 204012311420 / (2 + 0 + 4 + 0 + 1 + 2 + 3 + 1 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 204012311392 and 204012311401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100307766 + ... + 5100307805.

It is an arithmetic number, because the mean of its divisors is an integer number (35702154502).

Almost surely, 2^204012311420 is an apocalyptic number.

204012311420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204012311420 is an abundant number, since it is smaller than the sum of its proper divisors (224413542604).

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

204012311420 is a wasteful number, since it uses less digits than its factorization.

204012311420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200615580 (or 10200615578 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 204012311420 its reverse (24113210402), we get a palindrome (228125521822).

The spelling of 204012311420 in words is "two hundred four billion, twelve million, three hundred eleven thousand, four hundred twenty".