11388223867 has 4 divisors (see below), whose sum is σ = 11388950200. Its totient is φ = 11387497536.

The previous prime is 11388223853. The next prime is 11388223879. The reversal of 11388223867 is 76832288311.

11388223867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11388223867 - 2⁷ = 11388223739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11388223867.

It is not an unprimeable number, because it can be changed into a prime (11388223807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339117 + ... + 371182.

It is an arithmetic number, because the mean of its divisors is an integer number (2847237550).

Almost surely, 2^11388223867 is an apocalyptic number.

11388223867 is a deficient number, since it is larger than the sum of its proper divisors (726333).

11388223867 is an equidigital number, since it uses as much as digits as its factorization.

11388223867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726332.

The product of its digits is 774144, while the sum is 49.

The spelling of 11388223867 in words is "eleven billion, three hundred eighty-eight million, two hundred twenty-three thousand, eight hundred sixty-seven".