20560420927 has 4 divisors (see below), whose sum is σ = 20560745880. Its totient is φ = 20560095976.

The previous prime is 20560420919. The next prime is 20560420967. The reversal of 20560420927 is 72902406502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72902406502 = 2 ⋅36451203251.

It is a cyclic number.

It is not a de Polignac number, because 20560420927 - 2³ = 20560420919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560420967) 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 3 ways as a sum of consecutive naturals, for example, 33373 + ... + 205510.

It is an arithmetic number, because the mean of its divisors is an integer number (5140186470).

Almost surely, 2^20560420927 is an apocalyptic number.

20560420927 is a deficient number, since it is larger than the sum of its proper divisors (324953).

20560420927 is an equidigital number, since it uses as much as digits as its factorization.

20560420927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324952.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 20560420927 in words is "twenty billion, five hundred sixty million, four hundred twenty thousand, nine hundred twenty-seven".