205441630605 has 24 divisors (see below), whose sum is σ = 356109385632. Its totient is φ = 109565620704.

The previous prime is 205441630579. The next prime is 205441630609. The reversal of 205441630605 is 506036144502.

205441630605 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 4 + 16 + 30 + 605 = 666.

205441630605 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 205441630605 - 2⁷ = 205441630477 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 205441630605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205441630609) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2829162 + ... + 2900868.

It is an arithmetic number, because the mean of its divisors is an integer number (14837891068).

Almost surely, 2^205441630605 is an apocalyptic number.

It is an amenable number.

205441630605 is a deficient number, since it is larger than the sum of its proper divisors (150667755027).

205441630605 is a wasteful number, since it uses less digits than its factorization.

205441630605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135385 (or 135382 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 205441630605 in words is "two hundred five billion, four hundred forty-one million, six hundred thirty thousand, six hundred five".