91161344116 has 12 divisors (see below), whose sum is σ = 159537204288. Its totient is φ = 45579285752.

The previous prime is 91161344083. The next prime is 91161344143. The reversal of 91161344116 is 61144316119.

It is a super-2 number, since 2×91161344116² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 190846 + ... + 467701.

It is an arithmetic number, because the mean of its divisors is an integer number (13294767024).

Almost surely, 2^91161344116 is an apocalyptic number.

It is an amenable number.

91161344116 is a deficient number, since it is larger than the sum of its proper divisors (68375860172).

91161344116 is a wasteful number, since it uses less digits than its factorization.

91161344116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693158 (or 693156 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The spelling of 91161344116 in words is "ninety-one billion, one hundred sixty-one million, three hundred forty-four thousand, one hundred sixteen".