205240274562136 has 48 divisors (see below), whose sum is σ = 423072864398520. Its totient is φ = 93272764358400.

The previous prime is 205240274562121. The next prime is 205240274562157. The reversal of 205240274562136 is 631265472042502.

It is a self number, because there is not a number n which added to its sum of digits gives 205240274562136.

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 11 ways as a sum of consecutive naturals, for example, 15814705 + ... + 25701856.

Almost surely, 2^{205240274562136} is an apocalyptic number.

It is an amenable number.

205240274562136 is an abundant number, since it is smaller than the sum of its proper divisors (217832589836384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205240274562136 is a wasteful number, since it uses less digits than its factorization.

205240274562136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41521696 (or 41521681 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 49.

The spelling of 205240274562136 in words is "two hundred five trillion, two hundred forty billion, two hundred seventy-four million, five hundred sixty-two thousand, one hundred thirty-six".