204556354134 has 64 divisors (see below), whose sum is σ = 449040015360. Its totient is φ = 61607700000.

The previous prime is 204556354117. The next prime is 204556354141. The reversal of 204556354134 is 431453655402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10448647 + ... + 10468205.

It is an arithmetic number, because the mean of its divisors is an integer number (7016250240).

Almost surely, 2^204556354134 is an apocalyptic number.

204556354134 is an abundant number, since it is smaller than the sum of its proper divisors (244483661226).

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

204556354134 is a wasteful number, since it uses less digits than its factorization.

204556354134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 204556354134 in words is "two hundred four billion, five hundred fifty-six million, three hundred fifty-four thousand, one hundred thirty-four".