20331321245 has 8 divisors (see below), whose sum is σ = 24402501816. Its totient is φ = 16261779456.

The previous prime is 20331321233. The next prime is 20331321271. The reversal of 20331321245 is 54212313302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4831204 + 20326490041 = 2198^2 + 142571^2 .

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 20331321245 - 2⁴ = 20331321229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382232 + ... + 432161.

It is an arithmetic number, because the mean of its divisors is an integer number (3050312727).

Almost surely, 2^20331321245 is an apocalyptic number.

It is an amenable number.

20331321245 is a deficient number, since it is larger than the sum of its proper divisors (4071180571).

20331321245 is an equidigital number, since it uses as much as digits as its factorization.

20331321245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819391.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 20331321245 its reverse (54212313302), we get a palindrome (74543634547).

The spelling of 20331321245 in words is "twenty billion, three hundred thirty-one million, three hundred twenty-one thousand, two hundred forty-five".