20560442406 has 32 divisors (see below), whose sum is σ = 47015976960. Its totient is φ = 5871827136.

The previous prime is 20560442351. The next prime is 20560442407. The reversal of 20560442406 is 60424406502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560442407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10086 + ... + 203033.

It is an arithmetic number, because the mean of its divisors is an integer number (1469249280).

Almost surely, 2^20560442406 is an apocalyptic number.

20560442406 is an abundant number, since it is smaller than the sum of its proper divisors (26455534554).

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

20560442406 is a wasteful number, since it uses less digits than its factorization.

20560442406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215428.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 20560442406 its reverse (60424406502), we get a palindrome (80984848908).

The spelling of 20560442406 in words is "twenty billion, five hundred sixty million, four hundred forty-two thousand, four hundred six".