16678860199 has 2 divisors, whose sum is σ = 16678860200. Its totient is φ = 16678860198.

The previous prime is 16678860197. The next prime is 16678860221. The reversal of 16678860199 is 99106887661.

It is a weak prime.

It is an emirp because it is prime and its reverse (99106887661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16678860199 - 2¹ = 16678860197 is a prime.

Together with 16678860197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16678860197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8339430099 + 8339430100.

It is an arithmetic number, because the mean of its divisors is an integer number (8339430100).

Almost surely, 2^16678860199 is an apocalyptic number.

16678860199 is a deficient number, since it is larger than the sum of its proper divisors (1).

16678860199 is an equidigital number, since it uses as much as digits as its factorization.

16678860199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 16678860199 in words is "sixteen billion, six hundred seventy-eight million, eight hundred sixty thousand, one hundred ninety-nine".