205110054205 has 32 divisors (see below), whose sum is σ = 287824435200. Its totient is φ = 137412529920.

The previous prime is 205110054173. The next prime is 205110054217. The reversal of 205110054205 is 502450011502.

205110054205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205110054205 - 2⁵ = 205110054173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205110054205.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 4269 + ... + 640498.

It is an arithmetic number, because the mean of its divisors is an integer number (8994513600).

Almost surely, 2^205110054205 is an apocalyptic number.

It is an amenable number.

205110054205 is a deficient number, since it is larger than the sum of its proper divisors (82714380995).

205110054205 is a wasteful number, since it uses less digits than its factorization.

205110054205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644989.

The product of its (nonzero) digits is 2000, while the sum is 25.

Adding to 205110054205 its reverse (502450011502), we get a palindrome (707560065707).

The spelling of 205110054205 in words is "two hundred five billion, one hundred ten million, fifty-four thousand, two hundred five".