205535402103 has 8 divisors (see below), whose sum is σ = 275243916400. Its totient is φ = 136425244608.

The previous prime is 205535402077. The next prime is 205535402167. The reversal of 205535402103 is 301204535502.

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

It is not a de Polignac number, because 205535402103 - 2⁵ = 205535402071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205535402903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149588398 + ... + 149589771.

It is an arithmetic number, because the mean of its divisors is an integer number (34405489550).

Almost surely, 2^205535402103 is an apocalyptic number.

205535402103 is a deficient number, since it is larger than the sum of its proper divisors (69708514297).

205535402103 is a wasteful number, since it uses less digits than its factorization.

205535402103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299178401.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 205535402103 its reverse (301204535502), we get a palindrome (506739937605).

The spelling of 205535402103 in words is "two hundred five billion, five hundred thirty-five million, four hundred two thousand, one hundred three".