12147324240 has 40 divisors (see below), whose sum is σ = 37656705888. Its totient is φ = 3239286400.

The previous prime is 12147324199. The next prime is 12147324247. The reversal of 12147324240 is 4242374121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12147324198 and 12147324207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147324247) 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, 25306686 + ... + 25307165.

Almost surely, 2^12147324240 is an apocalyptic number.

12147324240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12147324240 is an abundant number, since it is smaller than the sum of its proper divisors (25509381648).

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

12147324240 is a wasteful number, since it uses less digits than its factorization.

12147324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50613867 (or 50613861 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 12147324240 its reverse (4242374121), we get a palindrome (16389698361).

The spelling of 12147324240 in words is "twelve billion, one hundred forty-seven million, three hundred twenty-four thousand, two hundred forty".