16434843427 has 2 divisors, whose sum is σ = 16434843428. Its totient is φ = 16434843426.

The previous prime is 16434843389. The next prime is 16434843527. The reversal of 16434843427 is 72434843461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16434843427 - 2¹⁵ = 16434810659 is a prime.

It is not a weakly prime, because it can be changed into another prime (16434843527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217421713 + 8217421714.

It is an arithmetic number, because the mean of its divisors is an integer number (8217421714).

Almost surely, 2^16434843427 is an apocalyptic number.

16434843427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434843427 is an equidigital number, since it uses as much as digits as its factorization.

16434843427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 46.

The spelling of 16434843427 in words is "sixteen billion, four hundred thirty-four million, eight hundred forty-three thousand, four hundred twenty-seven".