20330020320 has 96 divisors (see below), whose sum is σ = 64059478560. Its totient is φ = 5419653120.

The previous prime is 20330020309. The next prime is 20330020343. The reversal of 20330020320 is 2302003302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20330020320² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20330020320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2675086 + ... + 2682674.

It is an arithmetic number, because the mean of its divisors is an integer number (667286235).

Almost surely, 2^20330020320 is an apocalyptic number.

20330020320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20330020320 is an abundant number, since it is smaller than the sum of its proper divisors (43729458240).

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

20330020320 is a wasteful number, since it uses less digits than its factorization.

20330020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13188 (or 13180 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 20330020320 its reverse (2302003302), we get a palindrome (22632023622).

The spelling of 20330020320 in words is "twenty billion, three hundred thirty million, twenty thousand, three hundred twenty".