91659848677 has 2 divisors, whose sum is σ = 91659848678. Its totient is φ = 91659848676.

The previous prime is 91659848669. The next prime is 91659848701. The reversal of 91659848677 is 77684895619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64869033636 + 26790815041 = 254694^2 + 163679^2 .

It is a cyclic number.

It is not a de Polignac number, because 91659848677 - 2³ = 91659848669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91659848627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45829924338 + 45829924339.

It is an arithmetic number, because the mean of its divisors is an integer number (45829924339).

Almost surely, 2^91659848677 is an apocalyptic number.

It is an amenable number.

91659848677 is a deficient number, since it is larger than the sum of its proper divisors (1).

91659848677 is an equidigital number, since it uses as much as digits as its factorization.

91659848677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 182891520, while the sum is 70.

The spelling of 91659848677 in words is "ninety-one billion, six hundred fifty-nine million, eight hundred forty-eight thousand, six hundred seventy-seven".