11109747132 has 378 divisors, whose sum is σ = 34361742744. Its totient is φ = 3133183680.

The previous prime is 11109747113. The next prime is 11109747133. The reversal of 11109747132 is 23174790111.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109747133) by changing a digit.

It is a polite number, since it can be written in 125 ways as a sum of consecutive naturals, for example, 300263418 + ... + 300263454.

Almost surely, 2^11109747132 is an apocalyptic number.

11109747132 is a gapful number since it is divisible by the number (12) 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 11109747132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17180871372).

11109747132 is an abundant number, since it is smaller than the sum of its proper divisors (23251995612).

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

11109747132 is a wasteful number, since it uses less digits than its factorization.

11109747132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The spelling of 11109747132 in words is "eleven billion, one hundred nine million, seven hundred forty-seven thousand, one hundred thirty-two".