11909334140 has 48 divisors (see below), whose sum is σ = 28719169920. Its totient is φ = 4102735680.

The previous prime is 11909334131. The next prime is 11909334179. The reversal of 11909334140 is 4143390911.

It is a self number, because there is not a number n which added to its sum of digits gives 11909334140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420382 + ... + 1428741.

It is an arithmetic number, because the mean of its divisors is an integer number (598316040).

Almost surely, 2^11909334140 is an apocalyptic number.

11909334140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11909334140 is an abundant number, since it is smaller than the sum of its proper divisors (16809835780).

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

11909334140 is a wasteful number, since it uses less digits than its factorization.

11909334140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849162 (or 2849160 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 11909334140 in words is "eleven billion, nine hundred nine million, three hundred thirty-four thousand, one hundred forty".