91116606392081 has 8 divisors (see below), whose sum is σ = 91731371961600. Its totient is φ = 90501884085808.

The previous prime is 91116606392047. The next prime is 91116606392087. The reversal of 91116606392081 is 18029360661119.

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 91116606392081 - 2¹⁸ = 91116606129937 is a prime.

It is a super-2 number, since 2×91116606392081² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91116606392087) 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, 6583841 + ... + 15019326.

It is an arithmetic number, because the mean of its divisors is an integer number (11466421495200).

Almost surely, 2^{91116606392081} is an apocalyptic number.

It is an amenable number.

91116606392081 is a deficient number, since it is larger than the sum of its proper divisors (614765569519).

91116606392081 is a wasteful number, since it uses less digits than its factorization.

91116606392081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21631623.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 91116606392081 in words is "ninety-one trillion, one hundred sixteen billion, six hundred six million, three hundred ninety-two thousand, eighty-one".