6855218269 has 2 divisors, whose sum is σ = 6855218270. Its totient is φ = 6855218268.

The previous prime is 6855218231. The next prime is 6855218291. The reversal of 6855218269 is 9628125586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4677876025 + 2177342244 = 68395^2 + 46662^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855218269 - 2⁹ = 6855217757 is a prime.

It is a super-2 number, since 2×6855218269² = 93988035031262712722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6855213269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427609134 + 3427609135.

It is an arithmetic number, because the mean of its divisors is an integer number (3427609135).

Almost surely, 2^6855218269 is an apocalyptic number.

It is an amenable number.

6855218269 is a deficient number, since it is larger than the sum of its proper divisors (1).

6855218269 is an equidigital number, since it uses as much as digits as its factorization.

6855218269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 52.

The square root of 6855218269 is about 82796.2455006264. The cubic root of 6855218269 is about 1899.6507454999.

The spelling of 6855218269 in words is "six billion, eight hundred fifty-five million, two hundred eighteen thousand, two hundred sixty-nine".