205018866984 has 32 divisors (see below), whose sum is σ = 542697001920. Its totient is φ = 64319644416.

The previous prime is 205018866971. The next prime is 205018867007. The reversal of 205018866984 is 489668810502.

It is a happy number.

205018866984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 251248204 + ... + 251249019.

It is an arithmetic number, because the mean of its divisors is an integer number (16959281310).

Almost surely, 2^205018866984 is an apocalyptic number.

205018866984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

205018866984 is an abundant number, since it is smaller than the sum of its proper divisors (337678134936).

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

205018866984 is a wasteful number, since it uses less digits than its factorization.

205018866984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502497249 (or 502497245 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 205018866984 in words is "two hundred five billion, eighteen million, eight hundred sixty-six thousand, nine hundred eighty-four".