205323240052 has 24 divisors (see below), whose sum is σ = 416271778496. Its totient is φ = 86790253248.

The previous prime is 205323240043. The next prime is 205323240113. The reversal of 205323240052 is 250042323502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 205323240052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50223798 + ... + 50227885.

Almost surely, 2^205323240052 is an apocalyptic number.

It is an amenable number.

205323240052 is an abundant number, since it is smaller than the sum of its proper divisors (210948538444).

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

205323240052 is a wasteful number, since it uses less digits than its factorization.

205323240052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100451767 (or 100451765 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 205323240052 its reverse (250042323502), we get a palindrome (455365563554).

The spelling of 205323240052 in words is "two hundred five billion, three hundred twenty-three million, two hundred forty thousand, fifty-two".