502406021020 has 12 divisors (see below), whose sum is σ = 1055052644184. Its totient is φ = 200962408400.

The previous prime is 502406020999. The next prime is 502406021057. The reversal of 502406021020 is 20120604205.

It is a junction number, because it is equal to n+sod(n) for n = 502406020982 and 502406021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12560150506 + ... + 12560150545.

It is an arithmetic number, because the mean of its divisors is an integer number (87921053682).

Almost surely, 2^502406021020 is an apocalyptic number.

It is an amenable number.

502406021020 is an abundant number, since it is smaller than the sum of its proper divisors (552646623164).

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

502406021020 is a wasteful number, since it uses less digits than its factorization.

502406021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25120301060 (or 25120301058 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 502406021020 its reverse (20120604205), we get a palindrome (522526625225).

The spelling of 502406021020 in words is "five hundred two billion, four hundred six million, twenty-one thousand, twenty".