204985236090 has 32 divisors (see below), whose sum is σ = 496562374080. Its totient is φ = 54151862144.

The previous prime is 204985236089. The next prime is 204985236107. The reversal of 204985236090 is 90632589402.

It is a happy 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, 31925955 + ... + 31932374.

It is an arithmetic number, because the mean of its divisors is an integer number (15517574190).

Almost surely, 2^204985236090 is an apocalyptic number.

204985236090 is an abundant number, since it is smaller than the sum of its proper divisors (291577137990).

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

204985236090 is a wasteful number, since it uses less digits than its factorization.

204985236090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63858446.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 204985236090 in words is "two hundred four billion, nine hundred eighty-five million, two hundred thirty-six thousand, ninety".