2688785243 has 2 divisors, whose sum is σ = 2688785244. Its totient is φ = 2688785242.

The previous prime is 2688785237. The next prime is 2688785251. The reversal of 2688785243 is 3425878862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2688785243 - 2¹⁶ = 2688719707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2688785213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1344392621 + 1344392622.

It is an arithmetic number, because the mean of its divisors is an integer number (1344392622).

Almost surely, 2^2688785243 is an apocalyptic number.

2688785243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2688785243 is an equidigital number, since it uses as much as digits as its factorization.

2688785243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5160960, while the sum is 53.

The square root of 2688785243 is about 51853.4978858707. The cubic root of 2688785243 is about 1390.5460379071.

The spelling of 2688785243 in words is "two billion, six hundred eighty-eight million, seven hundred eighty-five thousand, two hundred forty-three".