91486712365261 has 12 divisors (see below), whose sum is σ = 95361884416800. Its totient is φ = 87742526852960.

The previous prime is 91486712365207. The next prime is 91486712365289. The reversal of 91486712365261 is 16256321768419.

It is not a de Polignac number, because 91486712365261 - 2¹⁹ = 91486711840973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91486712365261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91486712365201) 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 in 11 ways as a sum of consecutive naturals, for example, 461121001 + ... + 461319358.

It is an arithmetic number, because the mean of its divisors is an integer number (7946823701400).

Almost surely, 2^{91486712365261} is an apocalyptic number.

It is an amenable number.

91486712365261 is a deficient number, since it is larger than the sum of its proper divisors (3875172051539).

91486712365261 is an equidigital number, since it uses as much as digits as its factorization.

91486712365261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922440500 (or 922440459 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 61.

The spelling of 91486712365261 in words is "ninety-one trillion, four hundred eighty-six billion, seven hundred twelve million, three hundred sixty-five thousand, two hundred sixty-one".