10909191911 has 2 divisors, whose sum is σ = 10909191912. Its totient is φ = 10909191910.

The previous prime is 10909191883. The next prime is 10909191913. The reversal of 10909191911 is 11919190901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10909191911 is a prime.

Together with 10909191913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10909191913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5454595955 + 5454595956.

It is an arithmetic number, because the mean of its divisors is an integer number (5454595956).

Almost surely, 2^10909191911 is an apocalyptic number.

10909191911 is a deficient number, since it is larger than the sum of its proper divisors (1).

10909191911 is an equidigital number, since it uses as much as digits as its factorization.

10909191911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 10909191911 in words is "ten billion, nine hundred nine million, one hundred ninety-one thousand, nine hundred eleven".