204664212500136 has 64 divisors (see below), whose sum is σ = 519540267247680. Its totient is φ = 67171725688320.

The previous prime is 204664212500123. The next prime is 204664212500161. The reversal of 204664212500136 is 631005212466402.

It is a happy 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, 26343475 + ... + 33216066.

It is an arithmetic number, because the mean of its divisors is an integer number (8117816675745).

Almost surely, 2^{204664212500136} is an apocalyptic number.

It is an amenable number.

204664212500136 is an abundant number, since it is smaller than the sum of its proper divisors (314876054747544).

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

204664212500136 is a wasteful number, since it uses less digits than its factorization.

204664212500136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59561754 (or 59561750 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 204664212500136 its reverse (631005212466402), we get a palindrome (835669424966538).

The spelling of 204664212500136 in words is "two hundred four trillion, six hundred sixty-four billion, two hundred twelve million, five hundred thousand, one hundred thirty-six".