205723655216 has 40 divisors (see below), whose sum is σ = 403315994160. Its totient is φ = 101643531264.

The previous prime is 205723655183. The next prime is 205723655261. The reversal of 205723655216 is 612556327502.

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, 2315975 + ... + 2403161.

It is an arithmetic number, because the mean of its divisors is an integer number (10082899854).

Almost surely, 2^205723655216 is an apocalyptic number.

It is an amenable number.

205723655216 is a deficient number, since it is larger than the sum of its proper divisors (197592338944).

205723655216 is a wasteful number, since it uses less digits than its factorization.

205723655216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88941 (or 88935 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 205723655216 in words is "two hundred five billion, seven hundred twenty-three million, six hundred fifty-five thousand, two hundred sixteen".