12640280014 has 8 divisors (see below), whose sum is σ = 18962962920. Its totient is φ = 6319292376.

The previous prime is 12640279999. The next prime is 12640280017. The reversal of 12640280014 is 41008204621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640280017) 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, 405009 + ... + 435100.

It is an arithmetic number, because the mean of its divisors is an integer number (2370370365).

Almost surely, 2^12640280014 is an apocalyptic number.

12640280014 is a deficient number, since it is larger than the sum of its proper divisors (6322682906).

12640280014 is an equidigital number, since it uses as much as digits as its factorization.

12640280014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847634.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 12640280014 its reverse (41008204621), we get a palindrome (53648484635).

The spelling of 12640280014 in words is "twelve billion, six hundred forty million, two hundred eighty thousand, fourteen".