11388117577 has 4 divisors (see below), whose sum is σ = 11388518596. Its totient is φ = 11387716560.

The previous prime is 11388117569. The next prime is 11388117583. The reversal of 11388117577 is 77571188311.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8516336656 + 2871780921 = 92284^2 + 53589^2 .

It is a cyclic number.

It is not a de Polignac number, because 11388117577 - 2³ = 11388117569 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 11388117577.

It is not an unprimeable number, because it can be changed into a prime (11388117977) 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, 154374 + ... + 215887.

It is an arithmetic number, because the mean of its divisors is an integer number (2847129649).

Almost surely, 2^11388117577 is an apocalyptic number.

It is an amenable number.

11388117577 is a deficient number, since it is larger than the sum of its proper divisors (401019).

11388117577 is an equidigital number, since it uses as much as digits as its factorization.

11388117577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401018.

The product of its digits is 329280, while the sum is 49.

The spelling of 11388117577 in words is "eleven billion, three hundred eighty-eight million, one hundred seventeen thousand, five hundred seventy-seven".