11888888811 has 4 divisors (see below), whose sum is σ = 15851851752. Its totient is φ = 7925925872.

The previous prime is 11888888801. The next prime is 11888888819.

11888888811 is nontrivially palindromic in base 10.

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 11888888811 - 2⁶ = 11888888747 is a prime.

11888888811 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11888888819) 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, 1981481466 + ... + 1981481471.

It is an arithmetic number, because the mean of its divisors is an integer number (3962962938).

Almost surely, 2^11888888811 is an apocalyptic number.

11888888811 is a deficient number, since it is larger than the sum of its proper divisors (3962962941).

11888888811 is an equidigital number, since it uses as much as digits as its factorization.

11888888811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962962940.

The product of its digits is 2097152, while the sum is 60.

The spelling of 11888888811 in words is "eleven billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eleven".