205061216 has 12 divisors (see below), whose sum is σ = 403714332. Its totient is φ = 102530592.

The previous prime is 205061183. The next prime is 205061237. The reversal of 205061216 is 612160502.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 205061191 and 205061200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204050 + ... + 3204113.

It is an arithmetic number, because the mean of its divisors is an integer number (33642861).

Almost surely, 2^205061216 is an apocalyptic number.

It is an amenable number.

205061216 is a deficient number, since it is larger than the sum of its proper divisors (198653116).

205061216 is an equidigital number, since it uses as much as digits as its factorization.

205061216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408173 (or 6408165 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 205061216 is about 14319.9586591582. The cubic root of 205061216 is about 589.6955395538.

The spelling of 205061216 in words is "two hundred five million, sixty-one thousand, two hundred sixteen".