20321330512 has 40 divisors (see below), whose sum is σ = 45097560000. Its totient is φ = 8689723392.

The previous prime is 20321330489. The next prime is 20321330527. The reversal of 20321330512 is 21503312302.

It is a super-3 number, since 3×20321330512³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 151762 + ... + 252337.

It is an arithmetic number, because the mean of its divisors is an integer number (1127439000).

Almost surely, 2^20321330512 is an apocalyptic number.

It is an amenable number.

20321330512 is an abundant number, since it is smaller than the sum of its proper divisors (24776229488).

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

20321330512 is a wasteful number, since it uses less digits than its factorization.

20321330512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404563 (or 404557 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20321330512 its reverse (21503312302), we get a palindrome (41824642814).

The spelling of 20321330512 in words is "twenty billion, three hundred twenty-one million, three hundred thirty thousand, five hundred twelve".