52320420020 has 48 divisors (see below), whose sum is σ = 121892904000. Its totient is φ = 18703134720.

The previous prime is 52320420013. The next prime is 52320420043. The reversal of 52320420020 is 2002402325.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 52320419974 and 52320420001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2002445 + ... + 2028404.

It is an arithmetic number, because the mean of its divisors is an integer number (2539435500).

Almost surely, 2^52320420020 is an apocalyptic number.

It is an amenable number.

52320420020 is an abundant number, since it is smaller than the sum of its proper divisors (69572483980).

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

52320420020 is a wasteful number, since it uses less digits than its factorization.

52320420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030928 (or 4030926 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 52320420020 its reverse (2002402325), we get a palindrome (54322822345).

The spelling of 52320420020 in words is "fifty-two billion, three hundred twenty million, four hundred twenty thousand, twenty".