500020412521 has 16 divisors (see below), whose sum is σ = 575733438720. Its totient is φ = 425378972160.

The previous prime is 500020412519. The next prime is 500020412543. The reversal of 500020412521 is 125214020005.

It is a cyclic number.

It is not a de Polignac number, because 500020412521 - 2¹ = 500020412519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 500020412492 and 500020412501.

It is not an unprimeable number, because it can be changed into a prime (500020412621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5247420 + ... + 5341858.

It is an arithmetic number, because the mean of its divisors is an integer number (35983339920).

Almost surely, 2^500020412521 is an apocalyptic number.

It is an amenable number.

500020412521 is a deficient number, since it is larger than the sum of its proper divisors (75713026199).

500020412521 is a wasteful number, since it uses less digits than its factorization.

500020412521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100104.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 500020412521 its reverse (125214020005), we get a palindrome (625234432526).

The spelling of 500020412521 in words is "five hundred billion, twenty million, four hundred twelve thousand, five hundred twenty-one".