43201064561 has 2 divisors, whose sum is σ = 43201064562. Its totient is φ = 43201064560.

The previous prime is 43201064539. The next prime is 43201064563. The reversal of 43201064561 is 16546010234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28718386225 + 14482678336 = 169465^2 + 120344^2 .

It is a cyclic number.

It is not a de Polignac number, because 43201064561 - 2⁶ = 43201064497 is a prime.

Together with 43201064563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43201064563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21600532280 + 21600532281.

It is an arithmetic number, because the mean of its divisors is an integer number (21600532281).

Almost surely, 2^43201064561 is an apocalyptic number.

It is an amenable number.

43201064561 is a deficient number, since it is larger than the sum of its proper divisors (1).

43201064561 is an equidigital number, since it uses as much as digits as its factorization.

43201064561 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 32.

Adding to 43201064561 its reverse (16546010234), we get a palindrome (59747074795).

The spelling of 43201064561 in words is "forty-three billion, two hundred one million, sixty-four thousand, five hundred sixty-one".