126756648797 has 2 divisors, whose sum is σ = 126756648798. Its totient is φ = 126756648796.

The previous prime is 126756648787. The next prime is 126756648869. The reversal of 126756648797 is 797846657621.

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., 125425055716 + 1331593081 = 354154^2 + 36491^2 .

It is a cyclic number.

It is not a de Polignac number, because 126756648797 - 2²⁴ = 126739871581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126756648787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63378324398 + 63378324399.

It is an arithmetic number, because the mean of its divisors is an integer number (63378324399).

Almost surely, 2^126756648797 is an apocalyptic number.

It is an amenable number.

126756648797 is a deficient number, since it is larger than the sum of its proper divisors (1).

126756648797 is an equidigital number, since it uses as much as digits as its factorization.

126756648797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 213373440, while the sum is 68.

The spelling of 126756648797 in words is "one hundred twenty-six billion, seven hundred fifty-six million, six hundred forty-eight thousand, seven hundred ninety-seven".