205368519988 has 12 divisors (see below), whose sum is σ = 359411073700. Its totient is φ = 102679641792.

The previous prime is 205368519973. The next prime is 205368520037. The reversal of 205368519988 is 889915863502.

It can be written as a sum of positive squares in 2 ways, for example, as 104026891024 + 101341628964 = 322532^2 + 318342^2 .

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, 1053513 + ... + 1233136.

Almost surely, 2^205368519988 is an apocalyptic number.

It is an amenable number.

205368519988 is a deficient number, since it is larger than the sum of its proper divisors (154042553712).

205368519988 is a wasteful number, since it uses less digits than its factorization.

205368519988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309106 (or 2309104 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 64.

The spelling of 205368519988 in words is "two hundred five billion, three hundred sixty-eight million, five hundred nineteen thousand, nine hundred eighty-eight".