43401041440 has 96 divisors (see below), whose sum is σ = 105406996464. Its totient is φ = 16875048960.

The previous prime is 43401041417. The next prime is 43401041443. The reversal of 43401041440 is 4414010434.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 31580133264 + 11820908176 = 177708^2 + 108724^2 .

It is not an unprimeable number, because it can be changed into a prime (43401041443) 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, 7556970 + ... + 7562710.

Almost surely, 2^43401041440 is an apocalyptic number.

43401041440 is a gapful number since it is divisible by the number (40) 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 43401041440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52703498232).

43401041440 is an abundant number, since it is smaller than the sum of its proper divisors (62005955024).

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

43401041440 is a wasteful number, since it uses less digits than its factorization.

43401041440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7070 (or 7062 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 43401041440 its reverse (4414010434), we get a palindrome (47815051874).

The spelling of 43401041440 in words is "forty-three billion, four hundred one million, forty-one thousand, four hundred forty".