91666886141 has 8 divisors (see below), whose sum is σ = 97078152960. Its totient is φ = 86257741248.

The previous prime is 91666886089. The next prime is 91666886159. The reversal of 91666886141 is 14168866619.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91666886141 - 2³⁴ = 74487016957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91666886191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441101 + ... + 614738.

It is an arithmetic number, because the mean of its divisors is an integer number (12134769120).

Almost surely, 2^91666886141 is an apocalyptic number.

It is an amenable number.

91666886141 is a deficient number, since it is larger than the sum of its proper divisors (5411266819).

91666886141 is a wasteful number, since it uses less digits than its factorization.

91666886141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060963.

The product of its digits is 2985984, while the sum is 56.

The spelling of 91666886141 in words is "ninety-one billion, six hundred sixty-six million, eight hundred eighty-six thousand, one hundred forty-one".