12531186673 has 2 divisors, whose sum is σ = 12531186674. Its totient is φ = 12531186672.

The previous prime is 12531186667. The next prime is 12531186713. The reversal of 12531186673 is 37668113521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6267572224 + 6263614449 = 79168^2 + 79143^2 .

It is a cyclic number.

It is not a de Polignac number, because 12531186673 - 2²⁹ = 11994315761 is a prime.

It is not a weakly prime, because it can be changed into another prime (12531186373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6265593336 + 6265593337.

It is an arithmetic number, because the mean of its divisors is an integer number (6265593337).

Almost surely, 2^12531186673 is an apocalyptic number.

It is an amenable number.

12531186673 is a deficient number, since it is larger than the sum of its proper divisors (1).

12531186673 is an equidigital number, since it uses as much as digits as its factorization.

12531186673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The spelling of 12531186673 in words is "twelve billion, five hundred thirty-one million, one hundred eighty-six thousand, six hundred seventy-three".