205150342205 has 16 divisors (see below), whose sum is σ = 247666661424. Its totient is φ = 163130365440.

The previous prime is 205150342171. The next prime is 205150342219. The reversal of 205150342205 is 502243051502.

It can be written as a sum of positive squares in 8 ways, for example, as 58337223961 + 146813118244 = 241531^2 + 383162^2 .

It is not a de Polignac number, because 205150342205 - 2³⁰ = 204076600381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1750529 + ... + 1864041.

It is an arithmetic number, because the mean of its divisors is an integer number (15479166339).

Almost surely, 2^205150342205 is an apocalyptic number.

It is an amenable number.

205150342205 is a deficient number, since it is larger than the sum of its proper divisors (42516319219).

205150342205 is a wasteful number, since it uses less digits than its factorization.

205150342205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115696.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 205150342205 its reverse (502243051502), we get a palindrome (707393393707).

The spelling of 205150342205 in words is "two hundred five billion, one hundred fifty million, three hundred forty-two thousand, two hundred five".