91001466009217 has 2 divisors, whose sum is σ = 91001466009218. Its totient is φ = 91001466009216.

The previous prime is 91001466009199. The next prime is 91001466009239. The reversal of 91001466009217 is 71290066410019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71835947920881 + 19165518088336 = 8475609^2 + 4377844^2 .

It is a cyclic number.

It is not a de Polignac number, because 91001466009217 - 2⁷ = 91001466009089 is a prime.

It is not a weakly prime, because it can be changed into another prime (91001466009317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45500733004608 + 45500733004609.

It is an arithmetic number, because the mean of its divisors is an integer number (45500733004609).

Almost surely, 2^{91001466009217} is an apocalyptic number.

It is an amenable number.

91001466009217 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001466009217 is an equidigital number, since it uses as much as digits as its factorization.

91001466009217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 91001466009217 in words is "ninety-one trillion, one billion, four hundred sixty-six million, nine thousand, two hundred seventeen".