16699235317819 has 2 divisors, whose sum is σ = 16699235317820. Its totient is φ = 16699235317818.

The previous prime is 16699235317811. The next prime is 16699235317889. The reversal of 16699235317819 is 91871353299661.

It is a happy number.

It is an a-pointer prime, because the next prime (16699235317889) can be obtained adding 16699235317819 to its sum of digits (70).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16699235317819 - 2³ = 16699235317811 is a prime.

It is a super-2 number, since 2×16699235317819² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16699235317811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8349617658909 + 8349617658910.

It is an arithmetic number, because the mean of its divisors is an integer number (8349617658910).

Almost surely, 2^{16699235317819} is an apocalyptic number.

16699235317819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16699235317819 is an equidigital number, since it uses as much as digits as its factorization.

16699235317819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132269760, while the sum is 70.

The spelling of 16699235317819 in words is "sixteen trillion, six hundred ninety-nine billion, two hundred thirty-five million, three hundred seventeen thousand, eight hundred nineteen".