12781751743 has 2 divisors, whose sum is σ = 12781751744. Its totient is φ = 12781751742.

The previous prime is 12781751737. The next prime is 12781751761. The reversal of 12781751743 is 34715718721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12781751743 - 2²⁵ = 12748197311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12781751693 and 12781751702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12781751243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6390875871 + 6390875872.

It is an arithmetic number, because the mean of its divisors is an integer number (6390875872).

Almost surely, 2^12781751743 is an apocalyptic number.

12781751743 is a deficient number, since it is larger than the sum of its proper divisors (1).

12781751743 is an equidigital number, since it uses as much as digits as its factorization.

12781751743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329280, while the sum is 46.

The spelling of 12781751743 in words is "twelve billion, seven hundred eighty-one million, seven hundred fifty-one thousand, seven hundred forty-three".