43052921043440 has 640 divisors, whose sum is σ = 128645377597440. Its totient is φ = 13012790169600.

The previous prime is 43052921043439. The next prime is 43052921043467. The reversal of 43052921043440 is 4434012925034.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8236638107 + ... + 8236643333.

It is an arithmetic number, because the mean of its divisors is an integer number (201008402496).

Almost surely, 2^{43052921043440} is an apocalyptic number.

43052921043440 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 43052921043440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64322688798720).

43052921043440 is an abundant number, since it is smaller than the sum of its proper divisors (85592456554000).

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

43052921043440 is a wasteful number, since it uses less digits than its factorization.

43052921043440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621 (or 5615 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

Adding to 43052921043440 its reverse (4434012925034), we get a palindrome (47486933968474).

The spelling of 43052921043440 in words is "forty-three trillion, fifty-two billion, nine hundred twenty-one million, forty-three thousand, four hundred forty".