91109084794 has 128 divisors (see below), whose sum is σ = 173630886912. Its totient is φ = 34903664640.

The previous prime is 91109084771. The next prime is 91109084809. The reversal of 91109084794 is 49748090119.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291083182 + ... + 291083494.

It is an arithmetic number, because the mean of its divisors is an integer number (1356491304).

Almost surely, 2^91109084794 is an apocalyptic number.

91109084794 is a deficient number, since it is larger than the sum of its proper divisors (82521802118).

91109084794 is a wasteful number, since it uses less digits than its factorization.

91109084794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 91109084794 in words is "ninety-one billion, one hundred nine million, eighty-four thousand, seven hundred ninety-four".