11199081709 has 4 divisors (see below), whose sum is σ = 11200265280. Its totient is φ = 11197898140.

The previous prime is 11199081667. The next prime is 11199081713. The reversal of 11199081709 is 90718099111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11199081709 - 2²⁷ = 11064863981 is a prime.

It is a super-2 number, since 2×11199081709² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199081739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577477 + ... + 596554.

It is an arithmetic number, because the mean of its divisors is an integer number (2800066320).

Almost surely, 2^11199081709 is an apocalyptic number.

It is an amenable number.

11199081709 is a deficient number, since it is larger than the sum of its proper divisors (1183571).

11199081709 is an equidigital number, since it uses as much as digits as its factorization.

11199081709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183570.

The product of its (nonzero) digits is 40824, while the sum is 46.

The spelling of 11199081709 in words is "eleven billion, one hundred ninety-nine million, eighty-one thousand, seven hundred nine".