12356906543 has 2 divisors, whose sum is σ = 12356906544. Its totient is φ = 12356906542.

The previous prime is 12356906537. The next prime is 12356906713. The reversal of 12356906543 is 34560965321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12356906543 - 2⁶ = 12356906479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12356906494 and 12356906503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12356906503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6178453271 + 6178453272.

It is an arithmetic number, because the mean of its divisors is an integer number (6178453272).

Almost surely, 2^12356906543 is an apocalyptic number.

12356906543 is a deficient number, since it is larger than the sum of its proper divisors (1).

12356906543 is an equidigital number, since it uses as much as digits as its factorization.

12356906543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 12356906543 in words is "twelve billion, three hundred fifty-six million, nine hundred six thousand, five hundred forty-three".