16231878199 has 2 divisors, whose sum is σ = 16231878200. Its totient is φ = 16231878198.

The previous prime is 16231878197. The next prime is 16231878203. The reversal of 16231878199 is 99187813261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16231878199 - 2¹ = 16231878197 is a prime.

Together with 16231878197, 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 (16231878191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115939099 + 8115939100.

It is an arithmetic number, because the mean of its divisors is an integer number (8115939100).

Almost surely, 2^16231878199 is an apocalyptic number.

16231878199 is a deficient number, since it is larger than the sum of its proper divisors (1).

16231878199 is an equidigital number, since it uses as much as digits as its factorization.

16231878199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 55.

The spelling of 16231878199 in words is "sixteen billion, two hundred thirty-one million, eight hundred seventy-eight thousand, one hundred ninety-nine".