126941287717 has 2 divisors, whose sum is σ = 126941287718. Its totient is φ = 126941287716.

The previous prime is 126941287703. The next prime is 126941287727. The reversal of 126941287717 is 717782149621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126489767716 + 451520001 = 355654^2 + 21249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126941287717 is a prime.

It is a super-2 number, since 2×126941287717² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126941287727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63470643858 + 63470643859.

It is an arithmetic number, because the mean of its divisors is an integer number (63470643859).

Almost surely, 2^126941287717 is an apocalyptic number.

It is an amenable number.

126941287717 is a deficient number, since it is larger than the sum of its proper divisors (1).

126941287717 is an equidigital number, since it uses as much as digits as its factorization.

126941287717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2370816, while the sum is 55.

The spelling of 126941287717 in words is "one hundred twenty-six billion, nine hundred forty-one million, two hundred eighty-seven thousand, seven hundred seventeen".