91106948033 has 2 divisors, whose sum is σ = 91106948034. Its totient is φ = 91106948032.

The previous prime is 91106948027. The next prime is 91106948047. The reversal of 91106948033 is 33084960119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53258023729 + 37848924304 = 230777^2 + 194548^2 .

It is a cyclic number.

It is not a de Polignac number, because 91106948033 - 2⁸ = 91106947777 is a prime.

It is not a weakly prime, because it can be changed into another prime (91106948633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45553474016 + 45553474017.

It is an arithmetic number, because the mean of its divisors is an integer number (45553474017).

Almost surely, 2^91106948033 is an apocalyptic number.

It is an amenable number.

91106948033 is a deficient number, since it is larger than the sum of its proper divisors (1).

91106948033 is an equidigital number, since it uses as much as digits as its factorization.

91106948033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 91106948033 in words is "ninety-one billion, one hundred six million, nine hundred forty-eight thousand, thirty-three".