12558945673 has 2 divisors, whose sum is σ = 12558945674. Its totient is φ = 12558945672.

The previous prime is 12558945643. The next prime is 12558945677. The reversal of 12558945673 is 37654985521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12528772624 + 30173049 = 111932^2 + 5493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12558945673 is a prime.

It is not a weakly prime, because it can be changed into another prime (12558945677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6279472836 + 6279472837.

It is an arithmetic number, because the mean of its divisors is an integer number (6279472837).

Almost surely, 2^12558945673 is an apocalyptic number.

It is an amenable number.

12558945673 is a deficient number, since it is larger than the sum of its proper divisors (1).

12558945673 is an equidigital number, since it uses as much as digits as its factorization.

12558945673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072000, while the sum is 55.

The spelling of 12558945673 in words is "twelve billion, five hundred fifty-eight million, nine hundred forty-five thousand, six hundred seventy-three".