22506436205 has 12 divisors (see below), whose sum is σ = 29686176156. Its totient is φ = 16368316800.

The previous prime is 22506436177. The next prime is 22506436219. The reversal of 22506436205 is 50263460522.

It can be written as a sum of positive squares in 2 ways, for example, as 7563085156 + 14943351049 = 86966^2 + 122243^2 .

It is not a de Polignac number, because 22506436205 - 2¹⁴ = 22506419821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18599756 + ... + 18600965.

It is an arithmetic number, because the mean of its divisors is an integer number (2473848013).

Almost surely, 2^22506436205 is an apocalyptic number.

It is an amenable number.

22506436205 is a deficient number, since it is larger than the sum of its proper divisors (7179739951).

22506436205 is a wasteful number, since it uses less digits than its factorization.

22506436205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37200748 (or 37200737 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 22506436205 its reverse (50263460522), we get a palindrome (72769896727).

The spelling of 22506436205 in words is "twenty-two billion, five hundred six million, four hundred thirty-six thousand, two hundred five".