205022521424 has 60 divisors (see below), whose sum is σ = 455554506336. Its totient is φ = 87562801536.

The previous prime is 205022521391. The next prime is 205022521447. The reversal of 205022521424 is 424125220502.

It is a happy number.

205022521424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9604427 + ... + 9625749.

Almost surely, 2^205022521424 is an apocalyptic number.

It is an amenable number.

205022521424 is an abundant number, since it is smaller than the sum of its proper divisors (250531984912).

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

205022521424 is an equidigital number, since it uses as much as digits as its factorization.

205022521424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21924 (or 21625 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 205022521424 its reverse (424125220502), we get a palindrome (629147741926).

The spelling of 205022521424 in words is "two hundred five billion, twenty-two million, five hundred twenty-one thousand, four hundred twenty-four".