91766850851 has 8 divisors (see below), whose sum is σ = 99141581280. Its totient is φ = 84437226432.

The previous prime is 91766850821. The next prime is 91766850859. The reversal of 91766850851 is 15805866719.

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

It is not a de Polignac number, because 91766850851 - 2¹⁰ = 91766849827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91766850859) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11272271 + ... + 11280408.

It is an arithmetic number, because the mean of its divisors is an integer number (12392697660).

Almost surely, 2^91766850851 is an apocalyptic number.

91766850851 is a deficient number, since it is larger than the sum of its proper divisors (7374730429).

91766850851 is a wasteful number, since it uses less digits than its factorization.

91766850851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22553005.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 91766850851 in words is "ninety-one billion, seven hundred sixty-six million, eight hundred fifty thousand, eight hundred fifty-one".