16699546691 has 2 divisors, whose sum is σ = 16699546692. Its totient is φ = 16699546690.

The previous prime is 16699546651. The next prime is 16699546769. The reversal of 16699546691 is 19664599661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16699546691 - 2⁶ = 16699546627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16699546651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349773345 + 8349773346.

It is an arithmetic number, because the mean of its divisors is an integer number (8349773346).

Almost surely, 2^16699546691 is an apocalyptic number.

16699546691 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699546691 is an equidigital number, since it uses as much as digits as its factorization.

16699546691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18895680, while the sum is 62.

The spelling of 16699546691 in words is "sixteen billion, six hundred ninety-nine million, five hundred forty-six thousand, six hundred ninety-one".