91118361082120 has 64 divisors (see below), whose sum is σ = 208886599217520. Its totient is φ = 35759306978304.

The previous prime is 91118361082109. The next prime is 91118361082123. The reversal of 91118361082120 is 2128016381119.

It can be written as a sum of positive squares in 8 ways, for example, as 89501552196676 + 1616808885444 = 9460526^2 + 1271538^2 .

It is not an unprimeable number, because it can be changed into a prime (91118361082123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360691374 + ... + 360943906.

Almost surely, 2^{91118361082120} is an apocalyptic number.

It is an amenable number.

91118361082120 is an abundant number, since it is smaller than the sum of its proper divisors (117768238135400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91118361082120 is a wasteful number, since it uses less digits than its factorization.

91118361082120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422794 (or 422790 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The spelling of 91118361082120 in words is "ninety-one trillion, one hundred eighteen billion, three hundred sixty-one million, eighty-two thousand, one hundred twenty".