11323778888 has 8 divisors (see below), whose sum is σ = 21232085430. Its totient is φ = 5661889440.

The previous prime is 11323778887. The next prime is 11323778891. The reversal of 11323778888 is 88887732311.

It can be written as a sum of positive squares in only one way, i.e., 6009660484 + 5314118404 = 77522^2 + 72898^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11323778881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 707736173 + ... + 707736188.

Almost surely, 2^11323778888 is an apocalyptic number.

It is an amenable number.

11323778888 is a deficient number, since it is larger than the sum of its proper divisors (9908306542).

11323778888 is a wasteful number, since it uses less digits than its factorization.

11323778888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415472367 (or 1415472363 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 56.

The spelling of 11323778888 in words is "eleven billion, three hundred twenty-three million, seven hundred seventy-eight thousand, eight hundred eighty-eight".