16434277427 has 2 divisors, whose sum is σ = 16434277428. Its totient is φ = 16434277426.

The previous prime is 16434277403. The next prime is 16434277463. The reversal of 16434277427 is 72477243461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16434277427 - 2¹⁰ = 16434276403 is a prime.

It is not a weakly prime, because it can be changed into another prime (16434274427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217138713 + 8217138714.

It is an arithmetic number, because the mean of its divisors is an integer number (8217138714).

Almost surely, 2^16434277427 is an apocalyptic number.

16434277427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434277427 is an equidigital number, since it uses as much as digits as its factorization.

16434277427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1580544, while the sum is 47.

The spelling of 16434277427 in words is "sixteen billion, four hundred thirty-four million, two hundred seventy-seven thousand, four hundred twenty-seven".