126438046673 has 2 divisors, whose sum is σ = 126438046674. Its totient is φ = 126438046672.

The previous prime is 126438046663. The next prime is 126438046687. The reversal of 126438046673 is 376640834621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106453417984 + 19984628689 = 326272^2 + 141367^2 .

It is a cyclic number.

It is not a de Polignac number, because 126438046673 - 2⁸ = 126438046417 is a prime.

It is not a weakly prime, because it can be changed into another prime (126438046663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63219023336 + 63219023337.

It is an arithmetic number, because the mean of its divisors is an integer number (63219023337).

Almost surely, 2^126438046673 is an apocalyptic number.

It is an amenable number.

126438046673 is a deficient number, since it is larger than the sum of its proper divisors (1).

126438046673 is an equidigital number, since it uses as much as digits as its factorization.

126438046673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 50.

The spelling of 126438046673 in words is "one hundred twenty-six billion, four hundred thirty-eight million, forty-six thousand, six hundred seventy-three".