12636527649 has 8 divisors (see below), whose sum is σ = 16853368512. Its totient is φ = 8422019280.

The previous prime is 12636527647. The next prime is 12636527689. The reversal of 12636527649 is 94672563621.

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

It is not a de Polignac number, because 12636527649 - 2¹ = 12636527647 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12636527641) 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, 570442 + ... + 592179.

It is an arithmetic number, because the mean of its divisors is an integer number (2106671064).

Almost surely, 2^12636527649 is an apocalyptic number.

It is an amenable number.

12636527649 is a deficient number, since it is larger than the sum of its proper divisors (4216840863).

12636527649 is a wasteful number, since it uses less digits than its factorization.

12636527649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166247.

The product of its digits is 3265920, while the sum is 51.

The spelling of 12636527649 in words is "twelve billion, six hundred thirty-six million, five hundred twenty-seven thousand, six hundred forty-nine".