43401031105440 has 192 divisors, whose sum is σ = 137488189587840. Its totient is φ = 11508023070720.

The previous prime is 43401031105433. The next prime is 43401031105441. The reversal of 43401031105440 is 4450113010434.

43401031105440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 43401031105398 and 43401031105407.

It is not an unprimeable number, because it can be changed into a prime (43401031105441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684322051 + ... + 684385469.

It is an arithmetic number, because the mean of its divisors is an integer number (716084320770).

Almost surely, 2^{43401031105440} is an apocalyptic number.

43401031105440 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 43401031105440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68744094793920).

43401031105440 is an abundant number, since it is smaller than the sum of its proper divisors (94087158482400).

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

43401031105440 is a wasteful number, since it uses less digits than its factorization.

43401031105440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71495 (or 71487 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 43401031105440 its reverse (4450113010434), we get a palindrome (47851144115874).

The spelling of 43401031105440 in words is "forty-three trillion, four hundred one billion, thirty-one million, one hundred five thousand, four hundred forty".