91992001801 has 32 divisors (see below), whose sum is σ = 109247201280. Its totient is φ = 75823862400.

The previous prime is 91992001741. The next prime is 91992001831. The reversal of 91992001801 is 10810029919.

It is a cyclic number.

It is not a de Polignac number, because 91992001801 - 2³³ = 83402067209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91992001831) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14666296 + ... + 14672566.

It is an arithmetic number, because the mean of its divisors is an integer number (3413975040).

Almost surely, 2^91992001801 is an apocalyptic number.

It is an amenable number.

91992001801 is a deficient number, since it is larger than the sum of its proper divisors (17255199479).

91992001801 is a wasteful number, since it uses less digits than its factorization.

91992001801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7045.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 91992001801 in words is "ninety-one billion, nine hundred ninety-two million, one thousand, eight hundred one".