12836511745 has 4 divisors (see below), whose sum is σ = 15403814100. Its totient is φ = 10269209392.

The previous prime is 12836511719. The next prime is 12836511749. The reversal of 12836511745 is 54711563821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6794869761 + 6041641984 = 82431^2 + 77728^2 .

It is a cyclic number.

It is not a de Polignac number, because 12836511745 - 2⁷ = 12836511617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12836511749) 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, 1283651170 + ... + 1283651179.

It is an arithmetic number, because the mean of its divisors is an integer number (3850953525).

Almost surely, 2^12836511745 is an apocalyptic number.

It is an amenable number.

12836511745 is a deficient number, since it is larger than the sum of its proper divisors (2567302355).

12836511745 is an equidigital number, since it uses as much as digits as its factorization.

12836511745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567302354.

The product of its digits is 201600, while the sum is 43.

The spelling of 12836511745 in words is "twelve billion, eight hundred thirty-six million, five hundred eleven thousand, seven hundred forty-five".