43251134020 has 24 divisors (see below), whose sum is σ = 91297997784. Its totient is φ = 17210812416.

The previous prime is 43251133927. The next prime is 43251134033. The reversal of 43251134020 is 2043115234.

It can be written as a sum of positive squares in 4 ways, for example, as 9566404864 + 33684729156 = 97808^2 + 183534^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5598619 + ... + 5606338.

It is an arithmetic number, because the mean of its divisors is an integer number (3804083241).

Almost surely, 2^43251134020 is an apocalyptic number.

It is an amenable number.

43251134020 is an abundant number, since it is smaller than the sum of its proper divisors (48046863764).

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

43251134020 is a wasteful number, since it uses less digits than its factorization.

43251134020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11205159 (or 11205157 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 43251134020 its reverse (2043115234), we get a palindrome (45294249254).

The spelling of 43251134020 in words is "forty-three billion, two hundred fifty-one million, one hundred thirty-four thousand, twenty".