13232120320 has 80 divisors (see below), whose sum is σ = 31761817560. Its totient is φ = 5286887424.

The previous prime is 13232120309. The next prime is 13232120329. The reversal of 13232120320 is 2302123231.

It can be written as a sum of positive squares in 4 ways, for example, as 10706454784 + 2525665536 = 103472^2 + 50256^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (13232120329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795716 + ... + 2800444.

Almost surely, 2^13232120320 is an apocalyptic number.

13232120320 is a gapful number since it is divisible by the number (10) 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 13232120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15880908780).

13232120320 is an abundant number, since it is smaller than the sum of its proper divisors (18529697240).

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

13232120320 is an equidigital number, since it uses as much as digits as its factorization.

13232120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845 (or 5829 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13232120320 its reverse (2302123231), we get a palindrome (15534243551).

The spelling of 13232120320 in words is "thirteen billion, two hundred thirty-two million, one hundred twenty thousand, three hundred twenty".