20324453120 has 144 divisors (see below), whose sum is σ = 50734107648. Its totient is φ = 7792373760.

The previous prime is 20324453111. The next prime is 20324453147. The reversal of 20324453120 is 2135442302.

It is a self number, because there is not a number n which added to its sum of digits gives 20324453120.

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, 4243367 + ... + 4248153.

It is an arithmetic number, because the mean of its divisors is an integer number (352320192).

Almost surely, 2^20324453120 is an apocalyptic number.

20324453120 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 20324453120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25367053824).

20324453120 is an abundant number, since it is smaller than the sum of its proper divisors (30409654528).

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

20324453120 is a wasteful number, since it uses less digits than its factorization.

20324453120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946 (or 4932 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20324453120 its reverse (2135442302), we get a palindrome (22459895422).

The spelling of 20324453120 in words is "twenty billion, three hundred twenty-four million, four hundred fifty-three thousand, one hundred twenty".