20504300213 has 8 divisors (see below), whose sum is σ = 21018043200. Its totient is φ = 19992234528.

The previous prime is 20504300191. The next prime is 20504300233. The reversal of 20504300213 is 31200340502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20504300213 - 2¹⁶ = 20504234677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504300233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394553 + ... + 443486.

It is an arithmetic number, because the mean of its divisors is an integer number (2627255400).

Almost surely, 2^20504300213 is an apocalyptic number.

It is an amenable number.

20504300213 is a deficient number, since it is larger than the sum of its proper divisors (513742987).

20504300213 is an equidigital number, since it uses as much as digits as its factorization.

20504300213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838651.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 20504300213 its reverse (31200340502), we get a palindrome (51704640715).

The spelling of 20504300213 in words is "twenty billion, five hundred four million, three hundred thousand, two hundred thirteen".