20404331333 has 4 divisors (see below), whose sum is σ = 20408809548. Its totient is φ = 20399853120.

The previous prime is 20404331303. The next prime is 20404331359. The reversal of 20404331333 is 33313340402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2021581444 + 18382749889 = 44962^2 + 135583^2 .

It is a cyclic number.

It is not a de Polignac number, because 20404331333 - 2²⁶ = 20337222469 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 (20404331303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2232266 + ... + 2241387.

It is an arithmetic number, because the mean of its divisors is an integer number (5102202387).

Almost surely, 2^20404331333 is an apocalyptic number.

It is an amenable number.

20404331333 is a deficient number, since it is larger than the sum of its proper divisors (4478215).

20404331333 is an equidigital number, since it uses as much as digits as its factorization.

20404331333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478214.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 20404331333 its reverse (33313340402), we get a palindrome (53717671735).

The spelling of 20404331333 in words is "twenty billion, four hundred four million, three hundred thirty-one thousand, three hundred thirty-three".