91859543323 has 2 divisors, whose sum is σ = 91859543324. Its totient is φ = 91859543322.

The previous prime is 91859543273. The next prime is 91859543327. The reversal of 91859543323 is 32334595819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91859543323 - 2¹⁷ = 91859412251 is a prime.

It is a super-2 number, since 2×91859543323² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91859543327) 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, 45929771661 + 45929771662.

It is an arithmetic number, because the mean of its divisors is an integer number (45929771662).

Almost surely, 2^91859543323 is an apocalyptic number.

91859543323 is a deficient number, since it is larger than the sum of its proper divisors (1).

91859543323 is an equidigital number, since it uses as much as digits as its factorization.

91859543323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3499200, while the sum is 52.

The spelling of 91859543323 in words is "ninety-one billion, eight hundred fifty-nine million, five hundred forty-three thousand, three hundred twenty-three".