43330056561 has 72 divisors (see below), whose sum is σ = 70796450088. Its totient is φ = 25506624000.

The previous prime is 43330056557. The next prime is 43330056571. The reversal of 43330056561 is 16565003334.

43330056561 is a `hidden beast` number, since 4 + 3 + 3 + 30 + 0 + 565 + 61 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11102626161 + 32227430400 = 105369^2 + 179520^2 .

It is not a de Polignac number, because 43330056561 - 2² = 43330056557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43330056521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5825701 + ... + 5833133.

It is an arithmetic number, because the mean of its divisors is an integer number (983284029).

Almost surely, 2^43330056561 is an apocalyptic number.

It is an amenable number.

43330056561 is a deficient number, since it is larger than the sum of its proper divisors (27466393527).

43330056561 is a wasteful number, since it uses less digits than its factorization.

43330056561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7615 (or 7601 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 43330056561 its reverse (16565003334), we get a palindrome (59895059895).

The spelling of 43330056561 in words is "forty-three billion, three hundred thirty million, fifty-six thousand, five hundred sixty-one".