11739843840 has 144 divisors (see below), whose sum is σ = 38704006656. Its totient is φ = 3029606400.

The previous prime is 11739843821. The next prime is 11739843851. The reversal of 11739843840 is 4834893711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 11739843840.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 69730 + ... + 168350.

It is an arithmetic number, because the mean of its divisors is an integer number (268777824).

Almost surely, 2^11739843840 is an apocalyptic number.

11739843840 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 11739843840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19352003328).

11739843840 is an abundant number, since it is smaller than the sum of its proper divisors (26964162816).

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

11739843840 is an equidigital number, since it uses as much as digits as its factorization.

11739843840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98676 (or 98662 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 11739843840 in words is "eleven billion, seven hundred thirty-nine million, eight hundred forty-three thousand, eight hundred forty".