11788534091 has 2 divisors, whose sum is σ = 11788534092. Its totient is φ = 11788534090.

The previous prime is 11788534067. The next prime is 11788534099. The reversal of 11788534091 is 19043588711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11788534091 - 2⁶ = 11788534027 is a prime.

It is not a weakly prime, because it can be changed into another prime (11788534099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5894267045 + 5894267046.

It is an arithmetic number, because the mean of its divisors is an integer number (5894267046).

Almost surely, 2^11788534091 is an apocalyptic number.

11788534091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11788534091 is an equidigital number, since it uses as much as digits as its factorization.

11788534091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 11788534091 in words is "eleven billion, seven hundred eighty-eight million, five hundred thirty-four thousand, ninety-one".