11109471720 has 32 divisors (see below), whose sum is σ = 33328415520. Its totient is φ = 2962525760.

The previous prime is 11109471719. The next prime is 11109471727. The reversal of 11109471720 is 2717490111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11109471727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46289346 + ... + 46289585.

It is an arithmetic number, because the mean of its divisors is an integer number (1041512985).

Almost surely, 2^11109471720 is an apocalyptic number.

11109471720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11109471720 is an abundant number, since it is smaller than the sum of its proper divisors (22218943800).

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

11109471720 is a wasteful number, since it uses less digits than its factorization.

11109471720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92578945 (or 92578941 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 33.

The spelling of 11109471720 in words is "eleven billion, one hundred nine million, four hundred seventy-one thousand, seven hundred twenty".