91111455411118 has 8 divisors (see below), whose sum is σ = 136709613173880. Its totient is φ = 45541584353160.

The previous prime is 91111455411083. The next prime is 91111455411209. The reversal of 91111455411118 is 81111455411119.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7071668148 + ... + 7071681031.

It is an arithmetic number, because the mean of its divisors is an integer number (17088701646735).

Almost surely, 2^{91111455411118} is an apocalyptic number.

91111455411118 is a deficient number, since it is larger than the sum of its proper divisors (45598157762762).

91111455411118 is a wasteful number, since it uses less digits than its factorization.

91111455411118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143352402.

The product of its digits is 28800, while the sum is 43.

Subtracting from 91111455411118 its reverse (81111455411119), we obtain a palindrome (9999999999999).

The spelling of 91111455411118 in words is "ninety-one trillion, one hundred eleven billion, four hundred fifty-five million, four hundred eleven thousand, one hundred eighteen".