91804541671 has 2 divisors, whose sum is σ = 91804541672. Its totient is φ = 91804541670.

The previous prime is 91804541659. The next prime is 91804541693. The reversal of 91804541671 is 17614540819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91804541671 - 2²⁹ = 91267670759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91804541641) 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, 45902270835 + 45902270836.

It is an arithmetic number, because the mean of its divisors is an integer number (45902270836).

Almost surely, 2^91804541671 is an apocalyptic number.

91804541671 is a deficient number, since it is larger than the sum of its proper divisors (1).

91804541671 is an equidigital number, since it uses as much as digits as its factorization.

91804541671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 91804541671 in words is "ninety-one billion, eight hundred four million, five hundred forty-one thousand, six hundred seventy-one".