91100000116 has 6 divisors (see below), whose sum is σ = 159425000210. Its totient is φ = 45550000056.

The previous prime is 91100000113. The next prime is 91100000149. The reversal of 91100000116 is 61100000119.

It can be written as a sum of positive squares in only one way, i.e., 90147660516 + 952339600 = 300246^2 + 30860^2 .

It is a super-2 number, since 2×91100000116² (a number of 23 digits) contains 22 as substring.

91100000116 is a strobogrammatic number because it is the same when read upside-down.

It is a junction number, because it is equal to n+sod(n) for n = 91100000093 and 91100000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91100000113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11387500011 + ... + 11387500018.

Almost surely, 2^91100000116 is an apocalyptic number.

It is an amenable number.

91100000116 is a deficient number, since it is larger than the sum of its proper divisors (68325000094).

91100000116 is a wasteful number, since it uses less digits than its factorization.

91100000116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22775000033 (or 22775000031 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 91100000116 in words is "ninety-one billion, one hundred million, one hundred sixteen", and thus it is an aban number.