16434492691 has 2 divisors, whose sum is σ = 16434492692. Its totient is φ = 16434492690.

The previous prime is 16434492689. The next prime is 16434492707. The reversal of 16434492691 is 19629443461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16434492691 - 2¹ = 16434492689 is a prime.

Together with 16434492689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16434492631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217246345 + 8217246346.

It is an arithmetic number, because the mean of its divisors is an integer number (8217246346).

Almost surely, 2^16434492691 is an apocalyptic number.

16434492691 is a deficient number, since it is larger than the sum of its proper divisors (1).

16434492691 is an equidigital number, since it uses as much as digits as its factorization.

16434492691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 49.

The spelling of 16434492691 in words is "sixteen billion, four hundred thirty-four million, four hundred ninety-two thousand, six hundred ninety-one".