408873218659 has 2 divisors, whose sum is σ = 408873218660. Its totient is φ = 408873218658.

The previous prime is 408873218657. The next prime is 408873218683. The reversal of 408873218659 is 956812378804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 408873218659 - 2¹ = 408873218657 is a prime.

Together with 408873218657, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 408873218597 and 408873218606.

It is not a weakly prime, because it can be changed into another prime (408873218657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204436609329 + 204436609330.

It is an arithmetic number, because the mean of its divisors is an integer number (204436609330).

It is a 1-persistent number, because it is pandigital, but 2⋅408873218659 = 817746437318 is not.

Almost surely, 2^408873218659 is an apocalyptic number.

408873218659 is a deficient number, since it is larger than the sum of its proper divisors (1).

408873218659 is an equidigital number, since it uses as much as digits as its factorization.

408873218659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23224320, while the sum is 61.

The spelling of 408873218659 in words is "four hundred eight billion, eight hundred seventy-three million, two hundred eighteen thousand, six hundred fifty-nine".