2443400304040 has 64 divisors (see below), whose sum is σ = 5574952656000. Its totient is φ = 963664388352.

The previous prime is 2443400304031. The next prime is 2443400304041. The reversal of 2443400304040 is 404030043442.

It is not an unprimeable number, because it can be changed into a prime (2443400304041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938386 + ... + 2401534.

It is an arithmetic number, because the mean of its divisors is an integer number (87108635250).

Almost surely, 2^{2443400304040} is an apocalyptic number.

2443400304040 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 2443400304040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2787476328000).

2443400304040 is an abundant number, since it is smaller than the sum of its proper divisors (3131552351960).

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

2443400304040 is a wasteful number, since it uses less digits than its factorization.

2443400304040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463746 (or 1463742 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 2443400304040 its reverse (404030043442), we get a palindrome (2847430347482).

The spelling of 2443400304040 in words is "two trillion, four hundred forty-three billion, four hundred million, three hundred four thousand, forty".