205128038068168 has 32 divisors (see below), whose sum is σ = 385510610943360. Its totient is φ = 102325212389440.

The previous prime is 205128038068159. The next prime is 205128038068181. The reversal of 205128038068168 is 861860830821502.

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, 833144730 + ... + 833390902.

It is an arithmetic number, because the mean of its divisors is an integer number (12047206591980).

Almost surely, 2^{205128038068168} is an apocalyptic number.

It is an amenable number.

205128038068168 is a deficient number, since it is larger than the sum of its proper divisors (180382572875192).

205128038068168 is a wasteful number, since it uses less digits than its factorization.

205128038068168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488277 (or 488273 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 58.

The spelling of 205128038068168 in words is "two hundred five trillion, one hundred twenty-eight billion, thirty-eight million, sixty-eight thousand, one hundred sixty-eight".