20205205024 has 48 divisors (see below), whose sum is σ = 42133148568. Its totient is φ = 9505124352.

The previous prime is 20205205021. The next prime is 20205205037. The reversal of 20205205024 is 42050250202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19918241424 + 286963600 = 141132^2 + 16940^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20205204986 and 20205205004.

It is not an unprimeable number, because it can be changed into a prime (20205205021) 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, 2614414 + ... + 2622130.

Almost surely, 2^20205205024 is an apocalyptic number.

It is an amenable number.

20205205024 is an abundant number, since it is smaller than the sum of its proper divisors (21927943544).

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

20205205024 is a wasteful number, since it uses less digits than its factorization.

20205205024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12557 (or 12549 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

Adding to 20205205024 its reverse (42050250202), we get a palindrome (62255455226).

The spelling of 20205205024 in words is "twenty billion, two hundred five million, two hundred five thousand, twenty-four".