20112324320 has 96 divisors (see below), whose sum is σ = 51921759456. Its totient is φ = 7301324800.

The previous prime is 20112324269. The next prime is 20112324343. The reversal of 20112324320 is 2342321102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20112324292 and 20112324301.

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, 1076660 + ... + 1095180.

It is an arithmetic number, because the mean of its divisors is an integer number (540851661).

Almost surely, 2^20112324320 is an apocalyptic number.

20112324320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20112324320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25960879728).

20112324320 is an abundant number, since it is smaller than the sum of its proper divisors (31809435136).

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

20112324320 is a wasteful number, since it uses less digits than its factorization.

20112324320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164 (or 19156 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20112324320 its reverse (2342321102), we get a palindrome (22454645422).

The spelling of 20112324320 in words is "twenty billion, one hundred twelve million, three hundred twenty-four thousand, three hundred twenty".