126740232961 has 2 divisors, whose sum is σ = 126740232962. Its totient is φ = 126740232960.

The previous prime is 126740232959. The next prime is 126740232967. The reversal of 126740232961 is 169232047621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111318318736 + 15421914225 = 333644^2 + 124185^2 .

It is a cyclic number.

It is not a de Polignac number, because 126740232961 - 2¹ = 126740232959 is a prime.

Together with 126740232959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126740232967) 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, 63370116480 + 63370116481.

It is an arithmetic number, because the mean of its divisors is an integer number (63370116481).

Almost surely, 2^126740232961 is an apocalyptic number.

It is an amenable number.

126740232961 is a deficient number, since it is larger than the sum of its proper divisors (1).

126740232961 is an equidigital number, since it uses as much as digits as its factorization.

126740232961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 126740232961 in words is "one hundred twenty-six billion, seven hundred forty million, two hundred thirty-two thousand, nine hundred sixty-one".