43040053550 has 24 divisors (see below), whose sum is σ = 86212539336. Its totient is φ = 15891711840.

The previous prime is 43040053549. The next prime is 43040053559. The reversal of 43040053550 is 5535004034.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43040053559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33107084 + ... + 33108383.

It is an arithmetic number, because the mean of its divisors is an integer number (3592189139).

Almost surely, 2^43040053550 is an apocalyptic number.

43040053550 is an abundant number, since it is smaller than the sum of its proper divisors (43172485786).

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

43040053550 is a wasteful number, since it uses less digits than its factorization.

43040053550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66215492 (or 66215487 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

Adding to 43040053550 its reverse (5535004034), we get a palindrome (48575057584).

The spelling of 43040053550 in words is "forty-three billion, forty million, fifty-three thousand, five hundred fifty".