20322320013 has 64 divisors (see below), whose sum is σ = 33466245120. Its totient is φ = 12122770176.

The previous prime is 20322319993. The next prime is 20322320017. The reversal of 20322320013 is 31002322302.

It is a happy number.

20322320013 is a `hidden beast` number, since 20 + 322 + 320 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 20322320013 - 2¹² = 20322315917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20322320017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1757256 + ... + 1768782.

It is an arithmetic number, because the mean of its divisors is an integer number (522910080).

Almost surely, 2^20322320013 is an apocalyptic number.

20322320013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20322320013 is a deficient number, since it is larger than the sum of its proper divisors (13143925107).

20322320013 is a wasteful number, since it uses less digits than its factorization.

20322320013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11743 (or 11737 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20322320013 its reverse (31002322302), we get a palindrome (51324642315).

The spelling of 20322320013 in words is "twenty billion, three hundred twenty-two million, three hundred twenty thousand, thirteen".