126303163549 has 2 divisors, whose sum is σ = 126303163550. Its totient is φ = 126303163548.

The previous prime is 126303163531. The next prime is 126303163561. The reversal of 126303163549 is 945361303621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64348468900 + 61954694649 = 253670^2 + 248907^2 .

It is a cyclic number.

It is not a de Polignac number, because 126303163549 - 2⁵ = 126303163517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126303163249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63151581774 + 63151581775.

It is an arithmetic number, because the mean of its divisors is an integer number (63151581775).

Almost surely, 2^126303163549 is an apocalyptic number.

It is an amenable number.

126303163549 is a deficient number, since it is larger than the sum of its proper divisors (1).

126303163549 is an equidigital number, since it uses as much as digits as its factorization.

126303163549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 126303163549 in words is "one hundred twenty-six billion, three hundred three million, one hundred sixty-three thousand, five hundred forty-nine".