11939394240 has 168 divisors, whose sum is σ = 41139221760. Its totient is φ = 3178205184.

The previous prime is 11939394239. The next prime is 11939394263. The reversal of 11939394240 is 4249393911.

11939394240 is a `hidden beast` number, since 1 + 19 + 3 + 9 + 394 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1773601 + ... + 1780319.

It is an arithmetic number, because the mean of its divisors is an integer number (244876320).

Almost surely, 2^11939394240 is an apocalyptic number.

11939394240 is a gapful number since it is divisible by the number (10) 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 11939394240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20569610880).

11939394240 is an abundant number, since it is smaller than the sum of its proper divisors (29199827520).

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

11939394240 is a wasteful number, since it uses less digits than its factorization.

11939394240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7359 (or 7346 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 11939394240 in words is "eleven billion, nine hundred thirty-nine million, three hundred ninety-four thousand, two hundred forty".