205609950312 has 32 divisors (see below), whose sum is σ = 553565251680. Its totient is φ = 63264600000.

The previous prime is 205609950307. The next prime is 205609950331. The reversal of 205609950312 is 213059906502.

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, 329502814 + ... + 329503437.

It is an arithmetic number, because the mean of its divisors is an integer number (17298914115).

Almost surely, 2^205609950312 is an apocalyptic number.

It is an amenable number.

205609950312 is an abundant number, since it is smaller than the sum of its proper divisors (347955301368).

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

205609950312 is a wasteful number, since it uses less digits than its factorization.

205609950312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659006273 (or 659006269 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The spelling of 205609950312 in words is "two hundred five billion, six hundred nine million, nine hundred fifty thousand, three hundred twelve".