205509531932 has 12 divisors (see below), whose sum is σ = 380797074000. Its totient is φ = 96710367936.

The previous prime is 205509531893. The next prime is 205509531961. The reversal of 205509531932 is 239135905502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511099432 + ... + 1511099567.

It is an arithmetic number, because the mean of its divisors is an integer number (31733089500).

Almost surely, 2^205509531932 is an apocalyptic number.

It is an amenable number.

205509531932 is a deficient number, since it is larger than the sum of its proper divisors (175287542068).

205509531932 is a wasteful number, since it uses less digits than its factorization.

205509531932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022199020 (or 3022199018 counting only the distinct ones).

The product of its (nonzero) digits is 364500, while the sum is 44.

The spelling of 205509531932 in words is "two hundred five billion, five hundred nine million, five hundred thirty-one thousand, nine hundred thirty-two".