12640324006 has 4 divisors (see below), whose sum is σ = 18960486012. Its totient is φ = 6320162002.

The previous prime is 12640324003. The next prime is 12640324049. The reversal of 12640324006 is 60042304621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640324001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3160081000 + ... + 3160081003.

It is an arithmetic number, because the mean of its divisors is an integer number (4740121503).

Almost surely, 2^12640324006 is an apocalyptic number.

12640324006 is a deficient number, since it is larger than the sum of its proper divisors (6320162006).

12640324006 is an equidigital number, since it uses as much as digits as its factorization.

12640324006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6320162005.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 12640324006 its reverse (60042304621), we get a palindrome (72682628627).

The spelling of 12640324006 in words is "twelve billion, six hundred forty million, three hundred twenty-four thousand, six".