126597738653 has 2 divisors, whose sum is σ = 126597738654. Its totient is φ = 126597738652.

The previous prime is 126597738623. The next prime is 126597738721. The reversal of 126597738653 is 356837795621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86326078969 + 40271659684 = 293813^2 + 200678^2 .

It is a cyclic number.

It is not a de Polignac number, because 126597738653 - 2³⁴ = 109417869469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126597738623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63298869326 + 63298869327.

It is an arithmetic number, because the mean of its divisors is an integer number (63298869327).

Almost surely, 2^126597738653 is an apocalyptic number.

It is an amenable number.

126597738653 is a deficient number, since it is larger than the sum of its proper divisors (1).

126597738653 is an equidigital number, since it uses as much as digits as its factorization.

126597738653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57153600, while the sum is 62.

The spelling of 126597738653 in words is "one hundred twenty-six billion, five hundred ninety-seven million, seven hundred thirty-eight thousand, six hundred fifty-three".