91116843158 has 16 divisors (see below), whose sum is σ = 149136811200. Its totient is φ = 41406601800.

The previous prime is 91116843127. The next prime is 91116843187. The reversal of 91116843158 is 85134861119.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415028 + ... + 595383.

It is an arithmetic number, because the mean of its divisors is an integer number (9321050700).

Almost surely, 2^91116843158 is an apocalyptic number.

91116843158 is a deficient number, since it is larger than the sum of its proper divisors (58019968042).

91116843158 is a wasteful number, since it uses less digits than its factorization.

91116843158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014523.

The product of its digits is 207360, while the sum is 47.

The spelling of 91116843158 in words is "ninety-one billion, one hundred sixteen million, eight hundred forty-three thousand, one hundred fifty-eight".