91001466009161 has 2 divisors, whose sum is σ = 91001466009162. Its totient is φ = 91001466009160.

The previous prime is 91001466009149. The next prime is 91001466009199. The reversal of 91001466009161 is 16190066410019.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84475510395136 + 6525955614025 = 9191056^2 + 2554595^2 .

It is a cyclic number.

It is not a de Polignac number, because 91001466009161 - 2²⁶ = 91001398900297 is a prime.

It is not a weakly prime, because it can be changed into another prime (91001468009161) 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, 45500733004580 + 45500733004581.

It is an arithmetic number, because the mean of its divisors is an integer number (45500733004581).

Almost surely, 2^{91001466009161} is an apocalyptic number.

It is an amenable number.

91001466009161 is a deficient number, since it is larger than the sum of its proper divisors (1).

91001466009161 is an equidigital number, since it uses as much as digits as its factorization.

91001466009161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 91001466009161 in words is "ninety-one trillion, one billion, four hundred sixty-six million, nine thousand, one hundred sixty-one".