205050136404 has 24 divisors (see below), whose sum is σ = 483382798528. Its totient is φ = 67645405440.

The previous prime is 205050136397. The next prime is 205050136439. The reversal of 205050136404 is 404631050502.

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 7 ways as a sum of consecutive naturals, for example, 88078792 + ... + 88081119.

Almost surely, 2^205050136404 is an apocalyptic number.

It is an amenable number.

205050136404 is an abundant number, since it is smaller than the sum of its proper divisors (278332662124).

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

205050136404 is a wasteful number, since it uses less digits than its factorization.

205050136404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176160015 (or 176160013 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 205050136404 its reverse (404631050502), we get a palindrome (609681186906).

The spelling of 205050136404 in words is "two hundred five billion, fifty million, one hundred thirty-six thousand, four hundred four".