91920191011 has 8 divisors (see below), whose sum is σ = 103734385200. Its totient is φ = 80682299040.

The previous prime is 91920190987. The next prime is 91920191047. The reversal of 91920191011 is 11019102919.

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

It is a cyclic number.

It is not a de Polignac number, because 91920191011 - 2¹³ = 91920182819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91920197011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144075216 + ... + 144075853.

It is an arithmetic number, because the mean of its divisors is an integer number (12966798150).

Almost surely, 2^91920191011 is an apocalyptic number.

91920191011 is a deficient number, since it is larger than the sum of its proper divisors (11814194189).

91920191011 is a wasteful number, since it uses less digits than its factorization.

91920191011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288151109.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 91920191011 in words is "ninety-one billion, nine hundred twenty million, one hundred ninety-one thousand, eleven".