12783371749 has 2 divisors, whose sum is σ = 12783371750. Its totient is φ = 12783371748.

The previous prime is 12783371743. The next prime is 12783371753. The reversal of 12783371749 is 94717338721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11121178849 + 1662192900 = 105457^2 + 40770^2 .

It is a cyclic number.

It is not a de Polignac number, because 12783371749 - 2¹⁷ = 12783240677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12783371696 and 12783371705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12783371743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6391685874 + 6391685875.

It is an arithmetic number, because the mean of its divisors is an integer number (6391685875).

Almost surely, 2^12783371749 is an apocalyptic number.

It is an amenable number.

12783371749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12783371749 is an equidigital number, since it uses as much as digits as its factorization.

12783371749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1778112, while the sum is 52.

The spelling of 12783371749 in words is "twelve billion, seven hundred eighty-three million, three hundred seventy-one thousand, seven hundred forty-nine".