11101100550 has 96 divisors (see below), whose sum is σ = 29686849920. Its totient is φ = 2736057600.

The previous prime is 11101100537. The next prime is 11101100551. The reversal of 11101100550 is 5500110111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101100551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69349 + ... + 164351.

It is an arithmetic number, because the mean of its divisors is an integer number (309238020).

Almost surely, 2^11101100550 is an apocalyptic number.

11101100550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11101100550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14843424960).

11101100550 is an abundant number, since it is smaller than the sum of its proper divisors (18585749370).

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

11101100550 is a wasteful number, since it uses less digits than its factorization.

11101100550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95078 (or 95073 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 15.

Adding to 11101100550 its reverse (5500110111), we get a palindrome (16601210661).

The spelling of 11101100550 in words is "eleven billion, one hundred one million, one hundred thousand, five hundred fifty".