8131426170709 has 2 divisors, whose sum is σ = 8131426170710. Its totient is φ = 8131426170708.

The previous prime is 8131426170599. The next prime is 8131426170719. The reversal of 8131426170709 is 9070716241318.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5154248468209 + 2977177702500 = 2270297^2 + 1725450^2 .

It is a cyclic number.

It is not a de Polignac number, because 8131426170709 - 2¹⁷ = 8131426039637 is a prime.

It is a super-2 number, since 2×8131426170709² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8131426170719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065713085354 + 4065713085355.

It is an arithmetic number, because the mean of its divisors is an integer number (4065713085355).

Almost surely, 2^{8131426170709} is an apocalyptic number.

It is an amenable number.

8131426170709 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131426170709 is an equidigital number, since it uses as much as digits as its factorization.

8131426170709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 8131426170709 in words is "eight trillion, one hundred thirty-one billion, four hundred twenty-six million, one hundred seventy thousand, seven hundred nine".