205053004020 has 48 divisors (see below), whose sum is σ = 574230706560. Its totient is φ = 54672963456.

The previous prime is 205053004007. The next prime is 205053004073. The reversal of 205053004020 is 20400350502.

It is a super-2 number, since 2×205053004020² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 183354 + ... + 666126.

It is an arithmetic number, because the mean of its divisors is an integer number (11963139720).

Almost surely, 2^205053004020 is an apocalyptic number.

205053004020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205053004020 is an abundant number, since it is smaller than the sum of its proper divisors (369177702540).

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

205053004020 is a wasteful number, since it uses less digits than its factorization.

205053004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489864 (or 489862 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

Adding to 205053004020 its reverse (20400350502), we get a palindrome (225453354522).

The spelling of 205053004020 in words is "two hundred five billion, fifty-three million, four thousand, twenty".