43240520000 has 140 divisors (see below), whose sum is σ = 113531423940. Its totient is φ = 16278528000.

The previous prime is 43240519991. The next prime is 43240520033. The reversal of 43240520000 is 2504234.

It can be written as a sum of positive squares in 10 ways, for example, as 16255230016 + 26985289984 = 127496^2 + 164272^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 648206 + ... + 711794.

Almost surely, 2^43240520000 is an apocalyptic number.

43240520000 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 43240520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56765711970).

43240520000 is an abundant number, since it is smaller than the sum of its proper divisors (70290903940).

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

43240520000 is an equidigital number, since it uses as much as digits as its factorization.

43240520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63638 (or 63613 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The spelling of 43240520000 in words is "forty-three billion, two hundred forty million, five hundred twenty thousand".