6868685511 has 6 divisors (see below), whose sum is σ = 9921434640. Its totient is φ = 4579123668.

The previous prime is 6868685489. The next prime is 6868685519. The reversal of 6868685511 is 1155868686.

6868685511 is a `hidden beast` number, since 6 + 8 + 6 + 86 + 8 + 551 + 1 = 666.

6868685511 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6868685511 - 2¹¹ = 6868683463 is a prime.

It is a super-2 number, since 2×6868685511² = 94357681298042662242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868685519) 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 in 5 ways as a sum of consecutive naturals, for example, 381593631 + ... + 381593648.

It is an arithmetic number, because the mean of its divisors is an integer number (1653572440).

Almost surely, 2^6868685511 is an apocalyptic number.

6868685511 is a deficient number, since it is larger than the sum of its proper divisors (3052749129).

6868685511 is a wasteful number, since it uses less digits than its factorization.

6868685511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763187285 (or 763187282 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 6868685511 is about 82877.5332101529. The cubic root of 6868685511 is about 1900.8939017213.

The spelling of 6868685511 in words is "six billion, eight hundred sixty-eight million, six hundred eighty-five thousand, five hundred eleven".