11783719091 has 2 divisors, whose sum is σ = 11783719092. Its totient is φ = 11783719090.

The previous prime is 11783719037. The next prime is 11783719109. The reversal of 11783719091 is 19091738711.

Together with next prime (11783719109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (19091738711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11783719091 is a prime.

It is not a weakly prime, because it can be changed into another prime (11783719691) 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 as a sum of consecutive naturals, namely, 5891859545 + 5891859546.

It is an arithmetic number, because the mean of its divisors is an integer number (5891859546).

Almost surely, 2^11783719091 is an apocalyptic number.

11783719091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11783719091 is an equidigital number, since it uses as much as digits as its factorization.

11783719091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 47.

The spelling of 11783719091 in words is "eleven billion, seven hundred eighty-three million, seven hundred nineteen thousand, ninety-one".