91608316671757 has 2 divisors, whose sum is σ = 91608316671758. Its totient is φ = 91608316671756.

The previous prime is 91608316671743. The next prime is 91608316671779. The reversal of 91608316671757 is 75717661380619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70601989445001 + 21006327226756 = 8402499^2 + 4583266^2 .

It is a cyclic number.

It is not a de Polignac number, because 91608316671757 - 2¹⁵ = 91608316638989 is a prime.

It is a super-3 number, since 3×91608316671757³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91608316671692 and 91608316671701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91608316671737) 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, 45804158335878 + 45804158335879.

It is an arithmetic number, because the mean of its divisors is an integer number (45804158335879).

Almost surely, 2^{91608316671757} is an apocalyptic number.

It is an amenable number.

91608316671757 is a deficient number, since it is larger than the sum of its proper divisors (1).

91608316671757 is an equidigital number, since it uses as much as digits as its factorization.

91608316671757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 67.

The spelling of 91608316671757 in words is "ninety-one trillion, six hundred eight billion, three hundred sixteen million, six hundred seventy-one thousand, seven hundred fifty-seven".