12685182493 has 2 divisors, whose sum is σ = 12685182494. Its totient is φ = 12685182492.

The previous prime is 12685182463. The next prime is 12685182511. The reversal of 12685182493 is 39428158621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7416309924 + 5268872569 = 86118^2 + 72587^2 .

It is a cyclic number.

It is not a de Polignac number, because 12685182493 - 2⁹ = 12685181981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12685182443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6342591246 + 6342591247.

It is an arithmetic number, because the mean of its divisors is an integer number (6342591247).

Almost surely, 2^12685182493 is an apocalyptic number.

It is an amenable number.

12685182493 is a deficient number, since it is larger than the sum of its proper divisors (1).

12685182493 is an equidigital number, since it uses as much as digits as its factorization.

12685182493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The spelling of 12685182493 in words is "twelve billion, six hundred eighty-five million, one hundred eighty-two thousand, four hundred ninety-three".