12744136205 has 8 divisors (see below), whose sum is σ = 15333965592. Its totient is φ = 10167974208.

The previous prime is 12744136169. The next prime is 12744136219. The reversal of 12744136205 is 50263144721.

It can be written as a sum of positive squares in 4 ways, for example, as 168532324 + 12575603881 = 12982^2 + 112141^2 .

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 12744136205 - 2⁸ = 12744135949 is a prime.

It is a super-2 number, since 2×12744136205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414794 + ... + 3418523.

It is an arithmetic number, because the mean of its divisors is an integer number (1916745699).

Almost surely, 2^12744136205 is an apocalyptic number.

It is an amenable number.

12744136205 is a deficient number, since it is larger than the sum of its proper divisors (2589829387).

12744136205 is an equidigital number, since it uses as much as digits as its factorization.

12744136205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6833695.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 12744136205 in words is "twelve billion, seven hundred forty-four million, one hundred thirty-six thousand, two hundred five".