205756894968 has 16 divisors (see below), whose sum is σ = 514392237480. Its totient is φ = 68585631648.

The previous prime is 205756894943. The next prime is 205756894979. The reversal of 205756894968 is 869498657502.

205756894968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4286601955 + ... + 4286602002.

Almost surely, 2^205756894968 is an apocalyptic number.

It is an amenable number.

205756894968 is an abundant number, since it is smaller than the sum of its proper divisors (308635342512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205756894968 is a wasteful number, since it uses less digits than its factorization.

205756894968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8573203966 (or 8573203962 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 69.

The spelling of 205756894968 in words is "two hundred five billion, seven hundred fifty-six million, eight hundred ninety-four thousand, nine hundred sixty-eight".