18835700216833 has 2 divisors, whose sum is σ = 18835700216834. Its totient is φ = 18835700216832.

The previous prime is 18835700216777. The next prime is 18835700216857. The reversal of 18835700216833 is 33861200753881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14811475650624 + 4024224566209 = 3848568^2 + 2006047^2 .

It is a cyclic number.

It is not a de Polignac number, because 18835700216833 - 2⁹ = 18835700216321 is a prime.

It is not a weakly prime, because it can be changed into another prime (18835700216873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9417850108416 + 9417850108417.

It is an arithmetic number, because the mean of its divisors is an integer number (9417850108417).

Almost surely, 2^{18835700216833} is an apocalyptic number.

It is an amenable number.

18835700216833 is a deficient number, since it is larger than the sum of its proper divisors (1).

18835700216833 is an equidigital number, since it uses as much as digits as its factorization.

18835700216833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 18835700216833 in words is "eighteen trillion, eight hundred thirty-five billion, seven hundred million, two hundred sixteen thousand, eight hundred thirty-three".