12744742765 has 8 divisors (see below), whose sum is σ = 16098622560. Its totient is φ = 9659173392.

The previous prime is 12744742763. The next prime is 12744742793. The reversal of 12744742765 is 56724744721.

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

It is a cyclic number.

It is not a de Polignac number, because 12744742765 - 2¹ = 12744742763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12744742763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67077499 + ... + 67077688.

It is an arithmetic number, because the mean of its divisors is an integer number (2012327820).

Almost surely, 2^12744742765 is an apocalyptic number.

It is an amenable number.

12744742765 is a deficient number, since it is larger than the sum of its proper divisors (3353879795).

12744742765 is a wasteful number, since it uses less digits than its factorization.

12744742765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134155211.

The product of its digits is 2634240, while the sum is 49.

The spelling of 12744742765 in words is "twelve billion, seven hundred forty-four million, seven hundred forty-two thousand, seven hundred sixty-five".