12640280024 has 16 divisors (see below), whose sum is σ = 24947921400. Its totient is φ = 5987500992.

The previous prime is 12640280021. The next prime is 12640280053. The reversal of 12640280024 is 42008204621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12640280021) 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, 41579717 + ... + 41580020.

Almost surely, 2^12640280024 is an apocalyptic number.

It is an amenable number.

12640280024 is a deficient number, since it is larger than the sum of its proper divisors (12307641376).

12640280024 is a wasteful number, since it uses less digits than its factorization.

12640280024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83159762 (or 83159758 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 12640280024 its reverse (42008204621), we get a palindrome (54648484645).

The spelling of 12640280024 in words is "twelve billion, six hundred forty million, two hundred eighty thousand, twenty-four".