2043894783840 has 384 divisors, whose sum is σ = 7943466424320. Its totient is φ = 430181203968.

The previous prime is 2043894783829. The next prime is 2043894783881. The reversal of 2043894783840 is 483874983402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17807917 + ... + 17922323.

It is an arithmetic number, because the mean of its divisors is an integer number (20686110480).

Almost surely, 2^{2043894783840} is an apocalyptic number.

2043894783840 is a gapful number since it is divisible by the number (20) 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 2043894783840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3971733212160).

2043894783840 is an abundant number, since it is smaller than the sum of its proper divisors (5899571640480).

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

2043894783840 is a wasteful number, since it uses less digits than its factorization.

2043894783840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114854 (or 114846 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 60.

The spelling of 2043894783840 in words is "two trillion, forty-three billion, eight hundred ninety-four million, seven hundred eighty-three thousand, eight hundred forty".