91286646071 has 2 divisors, whose sum is σ = 91286646072. Its totient is φ = 91286646070.

The previous prime is 91286646043. The next prime is 91286646163. The reversal of 91286646071 is 17064668219.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91286646071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91286648071) 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, 45643323035 + 45643323036.

It is an arithmetic number, because the mean of its divisors is an integer number (45643323036).

Almost surely, 2^91286646071 is an apocalyptic number.

91286646071 is a deficient number, since it is larger than the sum of its proper divisors (1).

91286646071 is an equidigital number, since it uses as much as digits as its factorization.

91286646071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 91286646071 in words is "ninety-one billion, two hundred eighty-six million, six hundred forty-six thousand, seventy-one".