11151111104 has 112 divisors (see below), whose sum is σ = 27324100800. Its totient is φ = 4497776640.

The previous prime is 11151111073. The next prime is 11151111107. The reversal of 11151111104 is 40111115111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11151111107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358244 + ... + 388124.

Almost surely, 2^11151111104 is an apocalyptic number.

11151111104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11151111104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13662050400).

11151111104 is an abundant number, since it is smaller than the sum of its proper divisors (16172989696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11151111104 is an equidigital number, since it uses as much as digits as its factorization.

11151111104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29931 (or 29907 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 17.

Adding to 11151111104 its reverse (40111115111), we get a palindrome (51262226215).

The spelling of 11151111104 in words is "eleven billion, one hundred fifty-one million, one hundred eleven thousand, one hundred four".