12324206640 has 40 divisors (see below), whose sum is σ = 38205041328. Its totient is φ = 3286455040.

The previous prime is 12324206617. The next prime is 12324206689. The reversal of 12324206640 is 4660242321.

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 = 12324206598 and 12324206607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25675191 + ... + 25675670.

Almost surely, 2^12324206640 is an apocalyptic number.

12324206640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12324206640 is an abundant number, since it is smaller than the sum of its proper divisors (25880834688).

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

12324206640 is a wasteful number, since it uses less digits than its factorization.

12324206640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51350877 (or 51350871 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 12324206640 its reverse (4660242321), we get a palindrome (16984448961).

The spelling of 12324206640 in words is "twelve billion, three hundred twenty-four million, two hundred six thousand, six hundred forty".