20330321004 has 192 divisors, whose sum is σ = 61284787200. Its totient is φ = 5708330496.

The previous prime is 20330320999. The next prime is 20330321027. The reversal of 20330321004 is 40012303302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21467659 + ... + 21468605.

It is an arithmetic number, because the mean of its divisors is an integer number (319191600).

Almost surely, 2^20330321004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330321004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30642393600).

20330321004 is an abundant number, since it is smaller than the sum of its proper divisors (40954466196).

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

20330321004 is a wasteful number, since it uses less digits than its factorization.

20330321004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 1421 counting only the distinct ones).

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

Adding to 20330321004 its reverse (40012303302), we get a palindrome (60342624306).

The spelling of 20330321004 in words is "twenty billion, three hundred thirty million, three hundred twenty-one thousand, four".