126018665273 has 2 divisors, whose sum is σ = 126018665274. Its totient is φ = 126018665272.

The previous prime is 126018665239. The next prime is 126018665287. The reversal of 126018665273 is 372566810621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98478598969 + 27540066304 = 313813^2 + 165952^2 .

It is a cyclic number.

It is not a de Polignac number, because 126018665273 - 2¹⁸ = 126018403129 is a prime.

It is not a weakly prime, because it can be changed into another prime (126018665573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63009332636 + 63009332637.

It is an arithmetic number, because the mean of its divisors is an integer number (63009332637).

Almost surely, 2^126018665273 is an apocalyptic number.

It is an amenable number.

126018665273 is a deficient number, since it is larger than the sum of its proper divisors (1).

126018665273 is an equidigital number, since it uses as much as digits as its factorization.

126018665273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 126018665273 in words is "one hundred twenty-six billion, eighteen million, six hundred sixty-five thousand, two hundred seventy-three".