12811436782849 has 8 divisors (see below), whose sum is σ = 12834158595840. Its totient is φ = 12788715694176.

The previous prime is 12811436782831. The next prime is 12811436782867. The reversal of 12811436782849 is 94828763411821.

It is an interprime number because it is at equal distance from previous prime (12811436782831) and next prime (12811436782867).

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 12811436782849 - 2⁹ = 12811436782337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12811436782829) 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, 45346744 + ... + 45628390.

It is an arithmetic number, because the mean of its divisors is an integer number (1604269824480).

Almost surely, 2^{12811436782849} is an apocalyptic number.

It is an amenable number.

12811436782849 is a deficient number, since it is larger than the sum of its proper divisors (22721812991).

12811436782849 is an equidigital number, since it uses as much as digits as its factorization.

12811436782849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362159.

The product of its digits is 37158912, while the sum is 64.

The spelling of 12811436782849 in words is "twelve trillion, eight hundred eleven billion, four hundred thirty-six million, seven hundred eighty-two thousand, eight hundred forty-nine".