11388636089 has 4 divisors (see below), whose sum is σ = 11525848656. Its totient is φ = 11251423524.

The previous prime is 11388636019. The next prime is 11388636109. The reversal of 11388636089 is 98063688311.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 98063688311 = 241 ⋅406903271.

It is a cyclic number.

It is not a de Polignac number, because 11388636089 - 2⁸ = 11388635833 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 11388636089.

It is not an unprimeable number, because it can be changed into a prime (11388636019) 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, 68606159 + ... + 68606324.

It is an arithmetic number, because the mean of its divisors is an integer number (2881462164).

Almost surely, 2^11388636089 is an apocalyptic number.

It is an amenable number.

11388636089 is a deficient number, since it is larger than the sum of its proper divisors (137212567).

11388636089 is an equidigital number, since it uses as much as digits as its factorization.

11388636089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137212566.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 11388636089 in words is "eleven billion, three hundred eighty-eight million, six hundred thirty-six thousand, eighty-nine".