43301044561 has 2 divisors, whose sum is σ = 43301044562. Its totient is φ = 43301044560.

The previous prime is 43301044547. The next prime is 43301044609. The reversal of 43301044561 is 16544010334.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41069049025 + 2231995536 = 202655^2 + 47244^2 .

It is a cyclic number.

It is not a de Polignac number, because 43301044561 - 2⁷ = 43301044433 is a prime.

It is not a weakly prime, because it can be changed into another prime (43301044261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21650522280 + 21650522281.

It is an arithmetic number, because the mean of its divisors is an integer number (21650522281).

Almost surely, 2^43301044561 is an apocalyptic number.

It is an amenable number.

43301044561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43301044561 is an equidigital number, since it uses as much as digits as its factorization.

43301044561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 43301044561 its reverse (16544010334), we get a palindrome (59845054895).

The spelling of 43301044561 in words is "forty-three billion, three hundred one million, forty-four thousand, five hundred sixty-one".