204350121054 has 64 divisors (see below), whose sum is σ = 466957370880. Its totient is φ = 66202453440.

The previous prime is 204350121029. The next prime is 204350121061. The reversal of 204350121054 is 450121053402.

204350121054 is a `hidden beast` number, since 204 + 350 + 1 + 2 + 105 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 406809 + ... + 757755.

It is an arithmetic number, because the mean of its divisors is an integer number (7296208920).

Almost surely, 2^204350121054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204350121054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233478685440).

204350121054 is an abundant number, since it is smaller than the sum of its proper divisors (262607249826).

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

204350121054 is a wasteful number, since it uses less digits than its factorization.

204350121054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351262 (or 351256 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 204350121054 its reverse (450121053402), we get a palindrome (654471174456).

The spelling of 204350121054 in words is "two hundred four billion, three hundred fifty million, one hundred twenty-one thousand, fifty-four".