12818554547 has 2 divisors, whose sum is σ = 12818554548. Its totient is φ = 12818554546.

The previous prime is 12818554537. The next prime is 12818554561. The reversal of 12818554547 is 74545581821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12818554547 - 2⁴ = 12818554531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12818554495 and 12818554504.

It is not a weakly prime, because it can be changed into another prime (12818554537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409277273 + 6409277274.

It is an arithmetic number, because the mean of its divisors is an integer number (6409277274).

Almost surely, 2^12818554547 is an apocalyptic number.

12818554547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12818554547 is an equidigital number, since it uses as much as digits as its factorization.

12818554547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1792000, while the sum is 50.

The spelling of 12818554547 in words is "twelve billion, eight hundred eighteen million, five hundred fifty-four thousand, five hundred forty-seven".