91659017327266 has 4 divisors (see below), whose sum is σ = 137488525990902. Its totient is φ = 45829508663632.

The previous prime is 91659017327263. The next prime is 91659017327279. The reversal of 91659017327266 is 66272371095619.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83240460151641 + 8418557175625 = 9123621^2 + 2901475^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91659017327198 and 91659017327207.

It is not an unprimeable number, because it can be changed into a prime (91659017327263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22914754331815 + ... + 22914754331818.

Almost surely, 2^{91659017327266} is an apocalyptic number.

91659017327266 is a deficient number, since it is larger than the sum of its proper divisors (45829508663636).

91659017327266 is a wasteful number, since it uses less digits than its factorization.

91659017327266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45829508663635.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 91659017327266 in words is "ninety-one trillion, six hundred fifty-nine billion, seventeen million, three hundred twenty-seven thousand, two hundred sixty-six".