20544220530 has 48 divisors (see below), whose sum is σ = 53512752384. Its totient is φ = 5468430240.

The previous prime is 20544220441. The next prime is 20544220579. The reversal of 20544220530 is 3502244502.

It is a happy number.

20544220530 is a `hidden beast` number, since 20 + 54 + 42 + 20 + 530 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20544220494 and 20544220503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159426 + ... + 257885.

It is an arithmetic number, because the mean of its divisors is an integer number (1114849008).

Almost surely, 2^20544220530 is an apocalyptic number.

20544220530 is an abundant number, since it is smaller than the sum of its proper divisors (32968531854).

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

20544220530 is a wasteful number, since it uses less digits than its factorization.

20544220530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417871 (or 417868 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The spelling of 20544220530 in words is "twenty billion, five hundred forty-four million, two hundred twenty thousand, five hundred thirty".