205053503355 has 24 divisors (see below), whose sum is σ = 355493135088. Its totient is φ = 109341233856.

The previous prime is 205053503351. The next prime is 205053503363. The reversal of 205053503355 is 553305350502.

205053503355 is a `hidden beast` number, since 2 + 0 + 50 + 53 + 503 + 3 + 55 = 666.

It is not a de Polignac number, because 205053503355 - 2² = 205053503351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205053503351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187237 + ... + 667206.

It is an arithmetic number, because the mean of its divisors is an integer number (14812213962).

Almost surely, 2^205053503355 is an apocalyptic number.

205053503355 is a deficient number, since it is larger than the sum of its proper divisors (150439631733).

205053503355 is a wasteful number, since it uses less digits than its factorization.

205053503355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859787 (or 859784 counting only the distinct ones).

The product of its (nonzero) digits is 168750, while the sum is 36.

Adding to 205053503355 its reverse (553305350502), we get a palindrome (758358853857).

The spelling of 205053503355 in words is "two hundred five billion, fifty-three million, five hundred three thousand, three hundred fifty-five".