205304555144 has 32 divisors (see below), whose sum is σ = 415051560000. Its totient is φ = 94642969152.

The previous prime is 205304555143. The next prime is 205304555153. The reversal of 205304555144 is 441555403502.

It is a junction number, because it is equal to n+sod(n) for n = 205304555098 and 205304555107.

It is not an unprimeable number, because it can be changed into a prime (205304555143) 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, 1089194 + ... + 1263705.

It is an arithmetic number, because the mean of its divisors is an integer number (12970361250).

Almost surely, 2^205304555144 is an apocalyptic number.

It is an amenable number.

205304555144 is an abundant number, since it is smaller than the sum of its proper divisors (209747004856).

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

205304555144 is a wasteful number, since it uses less digits than its factorization.

205304555144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353757 (or 2353753 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 205304555144 its reverse (441555403502), we get a palindrome (646859958646).

The spelling of 205304555144 in words is "two hundred five billion, three hundred four million, five hundred fifty-five thousand, one hundred forty-four".