20320335372 has 24 divisors (see below), whose sum is σ = 48191398192. Its totient is φ = 6662404800.

The previous prime is 20320335283. The next prime is 20320335379. The reversal of 20320335372 is 27353302302.

It is not an unprimeable number, because it can be changed into a prime (20320335379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13879279 + ... + 13880742.

Almost surely, 2^20320335372 is an apocalyptic number.

It is an amenable number.

20320335372 is an abundant number, since it is smaller than the sum of its proper divisors (27871062820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320335372 is a wasteful number, since it uses less digits than its factorization.

20320335372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27760089 (or 27760087 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 30.

Adding to 20320335372 its reverse (27353302302), we get a palindrome (47673637674).

The spelling of 20320335372 in words is "twenty billion, three hundred twenty million, three hundred thirty-five thousand, three hundred seventy-two".