11209918320 has 160 divisors (see below), whose sum is σ = 40883365440. Its totient is φ = 2813460480.

The previous prime is 11209918289. The next prime is 11209918327. The reversal of 11209918320 is 2381990211.

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 (11209918327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115921 + ... + 189360.

It is an arithmetic number, because the mean of its divisors is an integer number (255521034).

Almost surely, 2^11209918320 is an apocalyptic number.

11209918320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11209918320 is an abundant number, since it is smaller than the sum of its proper divisors (29673447120).

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

11209918320 is a wasteful number, since it uses less digits than its factorization.

11209918320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305320 (or 305308 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 11209918320 in words is "eleven billion, two hundred nine million, nine hundred eighteen thousand, three hundred twenty".