91363641001 has 2 divisors, whose sum is σ = 91363641002. Its totient is φ = 91363641000.

The previous prime is 91363640989. The next prime is 91363641007. The reversal of 91363641001 is 10014636319.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87852960000 + 3510681001 = 296400^2 + 59251^2 .

It is an emirp because it is prime and its reverse (10014636319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91363641001 - 2²¹ = 91361543849 is a prime.

It is not a weakly prime, because it can be changed into another prime (91363641007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45681820500 + 45681820501.

It is an arithmetic number, because the mean of its divisors is an integer number (45681820501).

Almost surely, 2^91363641001 is an apocalyptic number.

It is an amenable number.

91363641001 is a deficient number, since it is larger than the sum of its proper divisors (1).

91363641001 is an equidigital number, since it uses as much as digits as its factorization.

91363641001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 91363641001 in words is "ninety-one billion, three hundred sixty-three million, six hundred forty-one thousand, one".