205550311135 has 8 divisors (see below), whose sum is σ = 265634248320. Its totient is φ = 151790998944.

The previous prime is 205550311129. The next prime is 205550311157. The reversal of 205550311135 is 531113055502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205550311135 - 2⁵ = 205550311103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205550311097 and 205550311106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581156175 + ... + 1581156304.

It is an arithmetic number, because the mean of its divisors is an integer number (33204281040).

Almost surely, 2^205550311135 is an apocalyptic number.

205550311135 is a deficient number, since it is larger than the sum of its proper divisors (60083937185).

205550311135 is a wasteful number, since it uses less digits than its factorization.

205550311135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162312497.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 205550311135 its reverse (531113055502), we get a palindrome (736663366637).

The spelling of 205550311135 in words is "two hundred five billion, five hundred fifty million, three hundred eleven thousand, one hundred thirty-five".