11842991424 has 224 divisors, whose sum is σ = 38097561600. Its totient is φ = 3577812480.

The previous prime is 11842991423. The next prime is 11842991431. The reversal of 11842991424 is 42419924811.

11842991424 is a `hidden beast` number, since 118 + 4 + 29 + 91 + 424 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 11842991424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11842991423) 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, 7963609 + ... + 7965095.

It is an arithmetic number, because the mean of its divisors is an integer number (170078400).

Almost surely, 2^11842991424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11842991424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19048780800).

11842991424 is an abundant number, since it is smaller than the sum of its proper divisors (26254570176).

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

11842991424 is a wasteful number, since it uses less digits than its factorization.

11842991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1922 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The spelling of 11842991424 in words is "eleven billion, eight hundred forty-two million, nine hundred ninety-one thousand, four hundred twenty-four".