91850101001 has 4 divisors (see below), whose sum is σ = 91882525332. Its totient is φ = 91817676672.

The previous prime is 91850100997. The next prime is 91850101033. The reversal of 91850101001 is 10010105819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10010105819 = 7 ⋅1430015117.

It can be written as a sum of positive squares in 2 ways, for example, as 42261491776 + 49588609225 = 205576^2 + 222685^2 .

It is a cyclic number.

It is not a de Polignac number, because 91850101001 - 2² = 91850100997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91850101061) 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, 16207916 + ... + 16213581.

It is an arithmetic number, because the mean of its divisors is an integer number (22970631333).

Almost surely, 2^91850101001 is an apocalyptic number.

It is an amenable number.

91850101001 is a deficient number, since it is larger than the sum of its proper divisors (32424331).

91850101001 is a wasteful number, since it uses less digits than its factorization.

91850101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32424330.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 91850101001 in words is "ninety-one billion, eight hundred fifty million, one hundred one thousand, one".