43243322077 has 2 divisors, whose sum is σ = 43243322078. Its totient is φ = 43243322076.

The previous prime is 43243321997. The next prime is 43243322107. The reversal of 43243322077 is 77022334234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28558972036 + 14684350041 = 168994^2 + 121179^2 .

It is a cyclic number.

It is not a de Polignac number, because 43243322077 - 2²⁷ = 43109104349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43243322677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621661038 + 21621661039.

It is an arithmetic number, because the mean of its divisors is an integer number (21621661039).

Almost surely, 2^43243322077 is an apocalyptic number.

It is an amenable number.

43243322077 is a deficient number, since it is larger than the sum of its proper divisors (1).

43243322077 is an equidigital number, since it uses as much as digits as its factorization.

43243322077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 37.

The spelling of 43243322077 in words is "forty-three billion, two hundred forty-three million, three hundred twenty-two thousand, seventy-seven".