43420043552 has 12 divisors (see below), whose sum is σ = 85483210806. Its totient is φ = 21710021760.

The previous prime is 43420043551. The next prime is 43420043581. The reversal of 43420043552 is 25534002434.

It can be written as a sum of positive squares in only one way, i.e., 43245697936 + 174345616 = 207956^2 + 13204^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1356876361 = 43420043552 / (4 + 3 + 4 + 2 + 0 + 0 + 4 + 3 + 5 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (43420043551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678438149 + ... + 678438212.

Almost surely, 2^43420043552 is an apocalyptic number.

It is an amenable number.

43420043552 is a deficient number, since it is larger than the sum of its proper divisors (42063167254).

43420043552 is a wasteful number, since it uses less digits than its factorization.

43420043552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356876371 (or 1356876363 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 43420043552 its reverse (25534002434), we get a palindrome (68954045986).

The spelling of 43420043552 in words is "forty-three billion, four hundred twenty million, forty-three thousand, five hundred fifty-two".