12784372943 has 2 divisors, whose sum is σ = 12784372944. Its totient is φ = 12784372942.

The previous prime is 12784372921. The next prime is 12784373009. The reversal of 12784372943 is 34927348721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12784372943 - 2⁶ = 12784372879 is a prime.

It is a super-3 number, since 3×12784372943³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12784372891 and 12784372900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12784072943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392186471 + 6392186472.

It is an arithmetic number, because the mean of its divisors is an integer number (6392186472).

Almost surely, 2^12784372943 is an apocalyptic number.

12784372943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12784372943 is an equidigital number, since it uses as much as digits as its factorization.

12784372943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 50.

The spelling of 12784372943 in words is "twelve billion, seven hundred eighty-four million, three hundred seventy-two thousand, nine hundred forty-three".