12736318785 has 16 divisors (see below), whose sum is σ = 20379574080. Its totient is φ = 6792215360.

The previous prime is 12736318781. The next prime is 12736318787. The reversal of 12736318785 is 58781363721.

12736318785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12736318785 - 2² = 12736318781 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12736318781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302611 + ... + 342119.

It is an arithmetic number, because the mean of its divisors is an integer number (1273723380).

Almost surely, 2^12736318785 is an apocalyptic number.

12736318785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12736318785 is a deficient number, since it is larger than the sum of its proper divisors (7643255295).

12736318785 is a wasteful number, since it uses less digits than its factorization.

12736318785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61008.

The product of its digits is 1693440, while the sum is 51.

The spelling of 12736318785 in words is "twelve billion, seven hundred thirty-six million, three hundred eighteen thousand, seven hundred eighty-five".