91703511427609 has 2 divisors, whose sum is σ = 91703511427610. Its totient is φ = 91703511427608.

The previous prime is 91703511427573. The next prime is 91703511427613. The reversal of 91703511427609 is 90672411530719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79551629165584 + 12151882262025 = 8919172^2 + 3485955^2 .

It is a cyclic number.

It is not a de Polignac number, because 91703511427609 - 2¹⁵ = 91703511394841 is a prime.

It is a super-2 number, since 2×91703511427609² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91703511427609.

It is not a weakly prime, because it can be changed into another prime (91703511427639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45851755713804 + 45851755713805.

It is an arithmetic number, because the mean of its divisors is an integer number (45851755713805).

Almost surely, 2^{91703511427609} is an apocalyptic number.

It is an amenable number.

91703511427609 is a deficient number, since it is larger than the sum of its proper divisors (1).

91703511427609 is an equidigital number, since it uses as much as digits as its factorization.

91703511427609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The spelling of 91703511427609 in words is "ninety-one trillion, seven hundred three billion, five hundred eleven million, four hundred twenty-seven thousand, six hundred nine".