11007811509 has 4 divisors (see below), whose sum is σ = 14677082016. Its totient is φ = 7338541004.

The previous prime is 11007811499. The next prime is 11007811537. The reversal of 11007811509 is 90511870011.

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 11007811509 - 2³³ = 2417876917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11007811509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11007816509) 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 in 3 ways as a sum of consecutive naturals, for example, 1834635249 + ... + 1834635254.

It is an arithmetic number, because the mean of its divisors is an integer number (3669270504).

Almost surely, 2^11007811509 is an apocalyptic number.

It is an amenable number.

11007811509 is a deficient number, since it is larger than the sum of its proper divisors (3669270507).

11007811509 is an equidigital number, since it uses as much as digits as its factorization.

11007811509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669270506.

The product of its (nonzero) digits is 2520, while the sum is 33.

The spelling of 11007811509 in words is "eleven billion, seven million, eight hundred eleven thousand, five hundred nine".