204212343340 has 12 divisors (see below), whose sum is σ = 428845921056. Its totient is φ = 81684937328.

The previous prime is 204212343323. The next prime is 204212343343. The reversal of 204212343340 is 43343212402.

It is a junction number, because it is equal to n+sod(n) for n = 204212343299 and 204212343308.

It is not an unprimeable number, because it can be changed into a prime (204212343343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5105308564 + ... + 5105308603.

It is an arithmetic number, because the mean of its divisors is an integer number (35737160088).

Almost surely, 2^204212343340 is an apocalyptic number.

204212343340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204212343340 is an abundant number, since it is smaller than the sum of its proper divisors (224633577716).

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

204212343340 is a wasteful number, since it uses less digits than its factorization.

204212343340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210617176 (or 10210617174 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 204212343340 its reverse (43343212402), we get a palindrome (247555555742).

The spelling of 204212343340 in words is "two hundred four billion, two hundred twelve million, three hundred forty-three thousand, three hundred forty".