205773804428 has 6 divisors (see below), whose sum is σ = 360104157756. Its totient is φ = 102886902212.

The previous prime is 205773804413. The next prime is 205773804433. The reversal of 205773804428 is 824408377502.

205773804428 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 as a sum of consecutive naturals, namely, 25721725550 + ... + 25721725557.

It is an arithmetic number, because the mean of its divisors is an integer number (60017359626).

Almost surely, 2^205773804428 is an apocalyptic number.

It is an amenable number.

205773804428 is a deficient number, since it is larger than the sum of its proper divisors (154330353328).

205773804428 is a wasteful number, since it uses less digits than its factorization.

205773804428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51443451111 (or 51443451109 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 50.

The spelling of 205773804428 in words is "two hundred five billion, seven hundred seventy-three million, eight hundred four thousand, four hundred twenty-eight".