43385040500 has 24 divisors (see below), whose sum is σ = 94752929544. Its totient is φ = 17354016000.

The previous prime is 43385040493. The next prime is 43385040509. The reversal of 43385040500 is 504058334.

It can be written as a sum of positive squares in 4 ways, for example, as 11742323044 + 31642717456 = 108362^2 + 177884^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43385040509) by changing a digit.

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, 43384541 + ... + 43385540.

It is an arithmetic number, because the mean of its divisors is an integer number (3948038731).

Almost surely, 2^43385040500 is an apocalyptic number.

It is an amenable number.

43385040500 is an abundant number, since it is smaller than the sum of its proper divisors (51367889044).

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

43385040500 is a wasteful number, since it uses less digits than its factorization.

43385040500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86770100 (or 86770088 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 43385040500 its reverse (504058334), we get a palindrome (43889098834).

The spelling of 43385040500 in words is "forty-three billion, three hundred eighty-five million, forty thousand, five hundred".