20041304521 has 16 divisors (see below), whose sum is σ = 23347978240. Its totient is φ = 16848421200.

The previous prime is 20041304489. The next prime is 20041304537. The reversal of 20041304521 is 12540314002.

It is a cyclic number.

It is not a de Polignac number, because 20041304521 - 2⁵ = 20041304489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20041304492 and 20041304501.

It is not an unprimeable number, because it can be changed into a prime (20041304581) 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, 36501 + ... + 203506.

It is an arithmetic number, because the mean of its divisors is an integer number (1459248640).

Almost surely, 2^20041304521 is an apocalyptic number.

It is an amenable number.

20041304521 is a deficient number, since it is larger than the sum of its proper divisors (3306673719).

20041304521 is a wasteful number, since it uses less digits than its factorization.

20041304521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240244.

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

Adding to 20041304521 its reverse (12540314002), we get a palindrome (32581618523).

The spelling of 20041304521 in words is "twenty billion, forty-one million, three hundred four thousand, five hundred twenty-one".