12747436818953 has 2 divisors, whose sum is σ = 12747436818954. Its totient is φ = 12747436818952.

The previous prime is 12747436818923. The next prime is 12747436818997. The reversal of 12747436818953 is 35981863474721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12441795907849 + 305640911104 = 3527293^2 + 552848^2 .

It is a cyclic number.

It is not a de Polignac number, because 12747436818953 - 2¹² = 12747436814857 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12747436818923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6373718409476 + 6373718409477.

It is an arithmetic number, because the mean of its divisors is an integer number (6373718409477).

Almost surely, 2^{12747436818953} is an apocalyptic number.

It is an amenable number.

12747436818953 is a deficient number, since it is larger than the sum of its proper divisors (1).

12747436818953 is an equidigital number, since it uses as much as digits as its factorization.

12747436818953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243855360, while the sum is 68.

The spelling of 12747436818953 in words is "twelve trillion, seven hundred forty-seven billion, four hundred thirty-six million, eight hundred eighteen thousand, nine hundred fifty-three".