16594993968691 has 2 divisors, whose sum is σ = 16594993968692. Its totient is φ = 16594993968690.

The previous prime is 16594993968689. The next prime is 16594993968757. The reversal of 16594993968691 is 19686939949561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16594993968691 - 2¹ = 16594993968689 is a prime.

Together with 16594993968689, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 16594993968599 and 16594993968608.

It is not a weakly prime, because it can be changed into another prime (16594993968601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8297496984345 + 8297496984346.

It is an arithmetic number, because the mean of its divisors is an integer number (8297496984346).

Almost surely, 2^{16594993968691} is an apocalyptic number.

16594993968691 is a deficient number, since it is larger than the sum of its proper divisors (1).

16594993968691 is an equidigital number, since it uses as much as digits as its factorization.

16594993968691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6122200320, while the sum is 85.

The spelling of 16594993968691 in words is "sixteen trillion, five hundred ninety-four billion, nine hundred ninety-three million, nine hundred sixty-eight thousand, six hundred ninety-one".