204121457960 has 96 divisors (see below), whose sum is σ = 551490923520. Its totient is φ = 67726915200.

The previous prime is 204121457941. The next prime is 204121457987. The reversal of 204121457960 is 69754121402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1618976 + ... + 1740495.

It is an arithmetic number, because the mean of its divisors is an integer number (5744697120).

Almost surely, 2^204121457960 is an apocalyptic number.

204121457960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204121457960 is an abundant number, since it is smaller than the sum of its proper divisors (347369465560).

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

204121457960 is a wasteful number, since it uses less digits than its factorization.

204121457960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359527 (or 3359516 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 204121457960 in words is "two hundred four billion, one hundred twenty-one million, four hundred fifty-seven thousand, nine hundred sixty".