204311240550 has 72 divisors (see below), whose sum is σ = 549264871584. Its totient is φ = 54448390080.

The previous prime is 204311240543. The next prime is 204311240561. The reversal of 204311240550 is 55042113402.

204311240550 is a `hidden beast` number, since 20 + 43 + 1 + 12 + 40 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 568944 + ... + 855756.

It is an arithmetic number, because the mean of its divisors is an integer number (7628678772).

Almost surely, 2^204311240550 is an apocalyptic number.

204311240550 is an abundant number, since it is smaller than the sum of its proper divisors (344953631034).

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

204311240550 is a wasteful number, since it uses less digits than its factorization.

204311240550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288414 (or 288406 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 204311240550 its reverse (55042113402), we get a palindrome (259353353952).

The spelling of 204311240550 in words is "two hundred four billion, three hundred eleven million, two hundred forty thousand, five hundred fifty".