91611333916 has 12 divisors (see below), whose sum is σ = 161490053088. Its totient is φ = 45471318752.

The previous prime is 91611333911. The next prime is 91611333923. The reversal of 91611333916 is 61933311619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91611333911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83586436 + ... + 83587531.

It is an arithmetic number, because the mean of its divisors is an integer number (13457504424).

Almost surely, 2^91611333916 is an apocalyptic number.

It is an amenable number.

91611333916 is a deficient number, since it is larger than the sum of its proper divisors (69878719172).

91611333916 is a wasteful number, since it uses less digits than its factorization.

91611333916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167174108 (or 167174106 counting only the distinct ones).

The product of its digits is 78732, while the sum is 43.

The spelling of 91611333916 in words is "ninety-one billion, six hundred eleven million, three hundred thirty-three thousand, nine hundred sixteen".