11991099313 has 2 divisors, whose sum is σ = 11991099314. Its totient is φ = 11991099312.

The previous prime is 11991099287. The next prime is 11991099319. The reversal of 11991099313 is 31399019911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8799753249 + 3191346064 = 93807^2 + 56492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11991099313 is a prime.

It is a super-3 number, since 3×11991099313³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11991099319) 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, 5995549656 + 5995549657.

It is an arithmetic number, because the mean of its divisors is an integer number (5995549657).

Almost surely, 2^11991099313 is an apocalyptic number.

It is an amenable number.

11991099313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11991099313 is an equidigital number, since it uses as much as digits as its factorization.

11991099313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 46.

The spelling of 11991099313 in words is "eleven billion, nine hundred ninety-one million, ninety-nine thousand, three hundred thirteen".