43612421659 has 2 divisors, whose sum is σ = 43612421660. Its totient is φ = 43612421658.

The previous prime is 43612421627. The next prime is 43612421717. The reversal of 43612421659 is 95612421634.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43612421659 - 2⁵ = 43612421627 is a prime.

It is not a weakly prime, because it can be changed into another prime (43612421159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21806210829 + 21806210830.

It is an arithmetic number, because the mean of its divisors is an integer number (21806210830).

Almost surely, 2^43612421659 is an apocalyptic number.

43612421659 is a deficient number, since it is larger than the sum of its proper divisors (1).

43612421659 is an equidigital number, since it uses as much as digits as its factorization.

43612421659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The spelling of 43612421659 in words is "forty-three billion, six hundred twelve million, four hundred twenty-one thousand, six hundred fifty-nine".