205609007704 has 16 divisors (see below), whose sum is σ = 408194353800. Its totient is φ = 96757180032.

The previous prime is 205609007671. The next prime is 205609007713. The reversal of 205609007704 is 407700906502.

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, 755915334 + ... + 755915605.

Almost surely, 2^205609007704 is an apocalyptic number.

It is an amenable number.

205609007704 is a deficient number, since it is larger than the sum of its proper divisors (202585346096).

205609007704 is a wasteful number, since it uses less digits than its factorization.

205609007704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511830962 (or 1511830958 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 205609007704 in words is "two hundred five billion, six hundred nine million, seven thousand, seven hundred four".