12523161156749 has 2 divisors, whose sum is σ = 12523161156750. Its totient is φ = 12523161156748.

The previous prime is 12523161156743. The next prime is 12523161156853. The reversal of 12523161156749 is 94765116132521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11047932288649 + 1475228868100 = 3323843^2 + 1214590^2 .

It is a cyclic number.

It is not a de Polignac number, because 12523161156749 - 2¹⁶ = 12523161091213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12523161156749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12523161156743) 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, 6261580578374 + 6261580578375.

It is an arithmetic number, because the mean of its divisors is an integer number (6261580578375).

Almost surely, 2^{12523161156749} is an apocalyptic number.

It is an amenable number.

12523161156749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12523161156749 is an equidigital number, since it uses as much as digits as its factorization.

12523161156749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The spelling of 12523161156749 in words is "twelve trillion, five hundred twenty-three billion, one hundred sixty-one million, one hundred fifty-six thousand, seven hundred forty-nine".