43401323240 has 64 divisors (see below), whose sum is σ = 106672066560. Its totient is φ = 15761329920.

The previous prime is 43401323233. The next prime is 43401323261. The reversal of 43401323240 is 4232310434.

43401323240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267929 + ... + 398231.

It is an arithmetic number, because the mean of its divisors is an integer number (1666751040).

Almost surely, 2^43401323240 is an apocalyptic number.

43401323240 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 43401323240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53336033280).

43401323240 is an abundant number, since it is smaller than the sum of its proper divisors (63270743320).

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

43401323240 is a wasteful number, since it uses less digits than its factorization.

43401323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131082 (or 131078 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43401323240 its reverse (4232310434), we get a palindrome (47633633674).

The spelling of 43401323240 in words is "forty-three billion, four hundred one million, three hundred twenty-three thousand, two hundred forty".