43240220297 has 2 divisors, whose sum is σ = 43240220298. Its totient is φ = 43240220296.

The previous prime is 43240220281. The next prime is 43240220333. The reversal of 43240220297 is 79202204234.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35267337616 + 7972882681 = 187796^2 + 89291^2 .

It is a cyclic number.

It is not a de Polignac number, because 43240220297 - 2⁴ = 43240220281 is a prime.

It is not a weakly prime, because it can be changed into another prime (43240220797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21620110148 + 21620110149.

It is an arithmetic number, because the mean of its divisors is an integer number (21620110149).

Almost surely, 2^43240220297 is an apocalyptic number.

It is an amenable number.

43240220297 is a deficient number, since it is larger than the sum of its proper divisors (1).

43240220297 is an equidigital number, since it uses as much as digits as its factorization.

43240220297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 43240220297 in words is "forty-three billion, two hundred forty million, two hundred twenty thousand, two hundred ninety-seven".