11991099319 has 2 divisors, whose sum is σ = 11991099320. Its totient is φ = 11991099318.

The previous prime is 11991099313. The next prime is 11991099361. The reversal of 11991099319 is 91399019911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11991099319 - 2⁵ = 11991099287 is a prime.

It is a super-2 number, since 2×11991099319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11991099313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5995549659 + 5995549660.

It is an arithmetic number, because the mean of its divisors is an integer number (5995549660).

Almost surely, 2^11991099319 is an apocalyptic number.

11991099319 is a deficient number, since it is larger than the sum of its proper divisors (1).

11991099319 is an equidigital number, since it uses as much as digits as its factorization.

11991099319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 177147, while the sum is 52.

The spelling of 11991099319 in words is "eleven billion, nine hundred ninety-one million, ninety-nine thousand, three hundred nineteen".