16783387279 has 2 divisors, whose sum is σ = 16783387280. Its totient is φ = 16783387278.

The previous prime is 16783387253. The next prime is 16783387289. The reversal of 16783387279 is 97278338761.

It is a strong prime.

It is an emirp because it is prime and its reverse (97278338761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16783387279 - 2²³ = 16774998671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16783387289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8391693639 + 8391693640.

It is an arithmetic number, because the mean of its divisors is an integer number (8391693640).

Almost surely, 2^16783387279 is an apocalyptic number.

16783387279 is a deficient number, since it is larger than the sum of its proper divisors (1).

16783387279 is an equidigital number, since it uses as much as digits as its factorization.

16783387279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21337344, while the sum is 61.

The spelling of 16783387279 in words is "sixteen billion, seven hundred eighty-three million, three hundred eighty-seven thousand, two hundred seventy-nine".