126831089989361 has 2 divisors, whose sum is σ = 126831089989362. Its totient is φ = 126831089989360.

The previous prime is 126831089989343. The next prime is 126831089989451. The reversal of 126831089989361 is 163989980138621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125716680399025 + 1114409590336 = 11212345^2 + 1055656^2 .

It is a cyclic number.

It is not a de Polignac number, because 126831089989361 - 2¹⁸ = 126831089727217 is a prime.

It is a super-2 number, since 2×126831089989361² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126831089989861) 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, 63415544994680 + 63415544994681.

It is an arithmetic number, because the mean of its divisors is an integer number (63415544994681).

Almost surely, 2^{126831089989361} is an apocalyptic number.

It is an amenable number.

126831089989361 is a deficient number, since it is larger than the sum of its proper divisors (1).

126831089989361 is an equidigital number, since it uses as much as digits as its factorization.

126831089989361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241864704, while the sum is 74.

The spelling of 126831089989361 in words is "one hundred twenty-six trillion, eight hundred thirty-one billion, eighty-nine million, nine hundred eighty-nine thousand, three hundred sixty-one".