12320332040 has 16 divisors (see below), whose sum is σ = 27720747180. Its totient is φ = 4928132800.

The previous prime is 12320332027. The next prime is 12320332043. The reversal of 12320332040 is 4023302321.

It can be written as a sum of positive squares in 2 ways, for example, as 12317892196 + 2439844 = 110986^2 + 1562^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12320332043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154004111 + ... + 154004190.

Almost surely, 2^12320332040 is an apocalyptic number.

12320332040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320332040 is an abundant number, since it is smaller than the sum of its proper divisors (15400415140).

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

12320332040 is a wasteful number, since it uses less digits than its factorization.

12320332040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308008312 (or 308008308 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 12320332040 its reverse (4023302321), we get a palindrome (16343634361).

The spelling of 12320332040 in words is "twelve billion, three hundred twenty million, three hundred thirty-two thousand, forty".