2785320840559 has 2 divisors, whose sum is σ = 2785320840560. Its totient is φ = 2785320840558.

The previous prime is 2785320840493. The next prime is 2785320840707. The reversal of 2785320840559 is 9550480235872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2785320840559 - 2¹³ = 2785320832367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2785320846559) 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, 1392660420279 + 1392660420280.

It is an arithmetic number, because the mean of its divisors is an integer number (1392660420280).

Almost surely, 2^{2785320840559} is an apocalyptic number.

2785320840559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2785320840559 is an equidigital number, since it uses as much as digits as its factorization.

2785320840559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192000, while the sum is 58.

The spelling of 2785320840559 in words is "two trillion, seven hundred eighty-five billion, three hundred twenty million, eight hundred forty thousand, five hundred fifty-nine".