91850060905 has 16 divisors (see below), whose sum is σ = 113130892800. Its totient is φ = 71555216832.

The previous prime is 91850060873. The next prime is 91850060917. The reversal of 91850060905 is 50906005819.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 91850060905 - 2⁵ = 91850060873 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 935274 + ... + 1028803.

It is an arithmetic number, because the mean of its divisors is an integer number (7070680800).

Almost surely, 2^91850060905 is an apocalyptic number.

It is an amenable number.

91850060905 is a deficient number, since it is larger than the sum of its proper divisors (21280831895).

91850060905 is a wasteful number, since it uses less digits than its factorization.

91850060905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964328.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 91850060905 in words is "ninety-one billion, eight hundred fifty million, sixty thousand, nine hundred five".