43124422657 has 2 divisors, whose sum is σ = 43124422658. Its totient is φ = 43124422656.

The previous prime is 43124422619. The next prime is 43124422727. The reversal of 43124422657 is 75622442134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36619032321 + 6505390336 = 191361^2 + 80656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43124422657 is a prime.

It is not a weakly prime, because it can be changed into another prime (43124422057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21562211328 + 21562211329.

It is an arithmetic number, because the mean of its divisors is an integer number (21562211329).

Almost surely, 2^43124422657 is an apocalyptic number.

It is an amenable number.

43124422657 is a deficient number, since it is larger than the sum of its proper divisors (1).

43124422657 is an equidigital number, since it uses as much as digits as its factorization.

43124422657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 40.

The spelling of 43124422657 in words is "forty-three billion, one hundred twenty-four million, four hundred twenty-two thousand, six hundred fifty-seven".