91199985367 has 8 divisors (see below), whose sum is σ = 94160005632. Its totient is φ = 88274995200.

The previous prime is 91199985361. The next prime is 91199985379. The reversal of 91199985367 is 76358999119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91199985367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91199985361) 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 7 ways as a sum of consecutive naturals, for example, 8752234 + ... + 8762647.

It is an arithmetic number, because the mean of its divisors is an integer number (11770000704).

Almost surely, 2^91199985367 is an apocalyptic number.

91199985367 is a deficient number, since it is larger than the sum of its proper divisors (2960020265).

91199985367 is a wasteful number, since it uses less digits than its factorization.

91199985367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17515049.

The product of its digits is 33067440, while the sum is 67.

The spelling of 91199985367 in words is "ninety-one billion, one hundred ninety-nine million, nine hundred eighty-five thousand, three hundred sixty-seven".