11944059840 has 168 divisors, whose sum is σ = 41124957120. Its totient is φ = 3181799424.

The previous prime is 11944059839. The next prime is 11944059847. The reversal of 11944059840 is 4895044911.

It is a happy number.

11944059840 is a `hidden beast` number, since 1 + 19 + 4 + 4 + 0 + 598 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11944059847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4281166 + ... + 4283954.

Almost surely, 2^11944059840 is an apocalyptic number.

11944059840 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 11944059840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20562478560).

11944059840 is an abundant number, since it is smaller than the sum of its proper divisors (29180897280).

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

11944059840 is a wasteful number, since it uses less digits than its factorization.

11944059840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4299 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 11944059840 in words is "eleven billion, nine hundred forty-four million, fifty-nine thousand, eight hundred forty".