204454938980 has 24 divisors (see below), whose sum is σ = 429372768888. Its totient is φ = 81778661888.

The previous prime is 204454938973. The next prime is 204454938983. The reversal of 204454938980 is 89839454402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 432889636 + 204022049344 = 20806^2 + 451688^2 .

It is not an unprimeable number, because it can be changed into a prime (204454938983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333212 + ... + 721068.

It is an arithmetic number, because the mean of its divisors is an integer number (17890532037).

Almost surely, 2^204454938980 is an apocalyptic number.

204454938980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204454938980 is an abundant number, since it is smaller than the sum of its proper divisors (224917829908).

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

204454938980 is a wasteful number, since it uses less digits than its factorization.

204454938980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414223 (or 414221 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 56.

The spelling of 204454938980 in words is "two hundred four billion, four hundred fifty-four million, nine hundred thirty-eight thousand, nine hundred eighty".