12744540652 has 12 divisors (see below), whose sum is σ = 22304411920. Its totient is φ = 6371851536.

The previous prime is 12744540647. The next prime is 12744540659. The reversal of 12744540652 is 25604544721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12744540659) 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, 30363 + ... + 162514.

Almost surely, 2^12744540652 is an apocalyptic number.

It is an amenable number.

12744540652 is a deficient number, since it is larger than the sum of its proper divisors (9559871268).

12744540652 is a wasteful number, since it uses less digits than its factorization.

12744540652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209400 (or 209398 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 12744540652 in words is "twelve billion, seven hundred forty-four million, five hundred forty thousand, six hundred fifty-two".