91701244750891 has 4 divisors (see below), whose sum is σ = 91701264423232. Its totient is φ = 91701225078552.

The previous prime is 91701244750879. The next prime is 91701244750919. The reversal of 91701244750891 is 19805744210719.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91701244750891 - 2¹⁷ = 91701244619819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91701244750691) 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, 1547590 + ... + 13630756.

It is an arithmetic number, because the mean of its divisors is an integer number (22925316105808).

Almost surely, 2^{91701244750891} is an apocalyptic number.

91701244750891 is a deficient number, since it is larger than the sum of its proper divisors (19672341).

91701244750891 is a wasteful number, since it uses less digits than its factorization.

91701244750891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19672340.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 91701244750891 in words is "ninety-one trillion, seven hundred one billion, two hundred forty-four million, seven hundred fifty thousand, eight hundred ninety-one".