12741305849 has 4 divisors (see below), whose sum is σ = 12794174580. Its totient is φ = 12688437120.

The previous prime is 12741305839. The next prime is 12741305909. The reversal of 12741305849 is 94850314721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94850314721 = 23 ⋅4123926727.

It can be written as a sum of positive squares in 2 ways, for example, as 7038035449 + 5703270400 = 83893^2 + 75520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12741305849 - 2¹⁶ = 12741240313 is a prime.

It is a super-2 number, since 2×12741305849² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12741305839) 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, 26434004 + ... + 26434485.

It is an arithmetic number, because the mean of its divisors is an integer number (3198543645).

Almost surely, 2^12741305849 is an apocalyptic number.

It is an amenable number.

12741305849 is a deficient number, since it is larger than the sum of its proper divisors (52868731).

12741305849 is an equidigital number, since it uses as much as digits as its factorization.

12741305849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52868730.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 12741305849 in words is "twelve billion, seven hundred forty-one million, three hundred five thousand, eight hundred forty-nine".