20540052220 has 24 divisors (see below), whose sum is σ = 45404326800. Its totient is φ = 7783598592.

The previous prime is 20540052217. The next prime is 20540052233. The reversal of 20540052220 is 2225004502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20540052191 and 20540052200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27026005 + ... + 27026764.

It is an arithmetic number, because the mean of its divisors is an integer number (1891846950).

Almost surely, 2^20540052220 is an apocalyptic number.

20540052220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20540052220 is an abundant number, since it is smaller than the sum of its proper divisors (24864274580).

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

20540052220 is a wasteful number, since it uses less digits than its factorization.

20540052220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54052797 (or 54052795 counting only the distinct ones).

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

Adding to 20540052220 its reverse (2225004502), we get a palindrome (22765056722).

The spelling of 20540052220 in words is "twenty billion, five hundred forty million, fifty-two thousand, two hundred twenty".