126761861113 has 2 divisors, whose sum is σ = 126761861114. Its totient is φ = 126761861112.

The previous prime is 126761861077. The next prime is 126761861153. The reversal of 126761861113 is 311168167621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64195343424 + 62566517689 = 253368^2 + 250133^2 .

It is a cyclic number.

It is not a de Polignac number, because 126761861113 - 2²⁵ = 126728306681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126761861113.

It is not a weakly prime, because it can be changed into another prime (126761861153) 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, 63380930556 + 63380930557.

It is an arithmetic number, because the mean of its divisors is an integer number (63380930557).

Almost surely, 2^126761861113 is an apocalyptic number.

It is an amenable number.

126761861113 is a deficient number, since it is larger than the sum of its proper divisors (1).

126761861113 is an equidigital number, since it uses as much as digits as its factorization.

126761861113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The spelling of 126761861113 in words is "one hundred twenty-six billion, seven hundred sixty-one million, eight hundred sixty-one thousand, one hundred thirteen".