205234817308 has 12 divisors (see below), whose sum is σ = 359305945992. Its totient is φ = 102575975600.

The previous prime is 205234817267. The next prime is 205234817311. The reversal of 205234817308 is 803718432502.

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, 10347118 + ... + 10366933.

It is an arithmetic number, because the mean of its divisors is an integer number (29942162166).

Almost surely, 2^205234817308 is an apocalyptic number.

It is an amenable number.

205234817308 is a deficient number, since it is larger than the sum of its proper divisors (154071128684).

205234817308 is a wasteful number, since it uses less digits than its factorization.

205234817308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20716532 (or 20716530 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 205234817308 in words is "two hundred five billion, two hundred thirty-four million, eight hundred seventeen thousand, three hundred eight".