10920191911 has 4 divisors (see below), whose sum is σ = 10920730392. Its totient is φ = 10919653432.

The previous prime is 10920191903. The next prime is 10920191939. The reversal of 10920191911 is 11919102901.

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 10920191911 - 2³ = 10920191903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10920191011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237580 + ... + 279793.

It is an arithmetic number, because the mean of its divisors is an integer number (2730182598).

Almost surely, 2^10920191911 is an apocalyptic number.

10920191911 is a deficient number, since it is larger than the sum of its proper divisors (538481).

10920191911 is an equidigital number, since it uses as much as digits as its factorization.

10920191911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538480.

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

The spelling of 10920191911 in words is "ten billion, nine hundred twenty million, one hundred ninety-one thousand, nine hundred eleven".