126456654617 has 2 divisors, whose sum is σ = 126456654618. Its totient is φ = 126456654616.

The previous prime is 126456654587. The next prime is 126456654647. The reversal of 126456654617 is 716456654621.

It is a balanced prime because it is at equal distance from previous prime (126456654587) and next prime (126456654647).

It can be written as a sum of positive squares in only one way, i.e., 73429618441 + 53027036176 = 270979^2 + 230276^2 .

It is a cyclic number.

It is not a de Polignac number, because 126456654617 - 2¹⁴ = 126456638233 is a prime.

It is not a weakly prime, because it can be changed into another prime (126456654647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63228327308 + 63228327309.

It is an arithmetic number, because the mean of its divisors is an integer number (63228327309).

Almost surely, 2^126456654617 is an apocalyptic number.

It is an amenable number.

126456654617 is a deficient number, since it is larger than the sum of its proper divisors (1).

126456654617 is an equidigital number, since it uses as much as digits as its factorization.

126456654617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 53.

The spelling of 126456654617 in words is "one hundred twenty-six billion, four hundred fifty-six million, six hundred fifty-four thousand, six hundred seventeen".