11081191907 has 2 divisors, whose sum is σ = 11081191908. Its totient is φ = 11081191906.

The previous prime is 11081191817. The next prime is 11081191937. The reversal of 11081191907 is 70919118011.

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-11081191907 is a prime.

It is not a weakly prime, because it can be changed into another prime (11081191937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5540595953 + 5540595954.

It is an arithmetic number, because the mean of its divisors is an integer number (5540595954).

Almost surely, 2^11081191907 is an apocalyptic number.

11081191907 is a deficient number, since it is larger than the sum of its proper divisors (1).

11081191907 is an equidigital number, since it uses as much as digits as its factorization.

11081191907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 38.

The spelling of 11081191907 in words is "eleven billion, eighty-one million, one hundred ninety-one thousand, nine hundred seven".