204473589018 has 16 divisors (see below), whose sum is σ = 417648182400. Its totient is φ = 66707695616.

The previous prime is 204473588999. The next prime is 204473589053. The reversal of 204473589018 is 810985374402.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362541543 + ... + 362542106.

It is an arithmetic number, because the mean of its divisors is an integer number (26103011400).

Almost surely, 2^204473589018 is an apocalyptic number.

204473589018 is an abundant number, since it is smaller than the sum of its proper divisors (213174593382).

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

204473589018 is a wasteful number, since it uses less digits than its factorization.

204473589018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725083701.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 204473589018 in words is "two hundred four billion, four hundred seventy-three million, five hundred eighty-nine thousand, eighteen".