16776431459 has 2 divisors, whose sum is σ = 16776431460. Its totient is φ = 16776431458.

The previous prime is 16776431447. The next prime is 16776431461. The reversal of 16776431459 is 95413467761.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (95413467761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16776431459 - 2¹⁶ = 16776365923 is a prime.

Together with 16776431461, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16776431459.

It is not a weakly prime, because it can be changed into another prime (16776431489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8388215729 + 8388215730.

It is an arithmetic number, because the mean of its divisors is an integer number (8388215730).

Almost surely, 2^16776431459 is an apocalyptic number.

16776431459 is a deficient number, since it is larger than the sum of its proper divisors (1).

16776431459 is an equidigital number, since it uses as much as digits as its factorization.

16776431459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 16776431459 in words is "sixteen billion, seven hundred seventy-six million, four hundred thirty-one thousand, four hundred fifty-nine".