204620311544 has 32 divisors (see below), whose sum is σ = 419306803200. Its totient is φ = 92839175520.

The previous prime is 204620311543. The next prime is 204620311573. The reversal of 204620311544 is 445113026402.

It is a self number, because there is not a number n which added to its sum of digits gives 204620311544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204620311543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077304 + ... + 2173575.

It is an arithmetic number, because the mean of its divisors is an integer number (13103337600).

Almost surely, 2^204620311544 is an apocalyptic number.

It is an amenable number.

204620311544 is an abundant number, since it is smaller than the sum of its proper divisors (214686491656).

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

204620311544 is a wasteful number, since it uses less digits than its factorization.

204620311544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251443 (or 4251439 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 204620311544 its reverse (445113026402), we get a palindrome (649733337946).

The spelling of 204620311544 in words is "two hundred four billion, six hundred twenty million, three hundred eleven thousand, five hundred forty-four".