204208134590 has 32 divisors (see below), whose sum is σ = 368314599744. Its totient is φ = 81518918400.

The previous prime is 204208134589. The next prime is 204208134617. The reversal of 204208134590 is 95431802402.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29307287 + ... + 29314253.

It is an arithmetic number, because the mean of its divisors is an integer number (11509831242).

Almost surely, 2^204208134590 is an apocalyptic number.

204208134590 is a deficient number, since it is larger than the sum of its proper divisors (164106465154).

204208134590 is a wasteful number, since it uses less digits than its factorization.

204208134590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12452.

The product of its (nonzero) digits is 69120, while the sum is 38.

Adding to 204208134590 its reverse (95431802402), we get a palindrome (299639936992).

The spelling of 204208134590 in words is "two hundred four billion, two hundred eight million, one hundred thirty-four thousand, five hundred ninety".