6840534863827 has 24 divisors (see below), whose sum is σ = 8092708710144. Its totient is φ = 5763942111312.

The previous prime is 6840534863819. The next prime is 6840534863867. The reversal of 6840534863827 is 7283684350486.

It is a happy number.

It is not a de Polignac number, because 6840534863827 - 2³ = 6840534863819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6840534863867) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 540423 + ... + 3738064.

It is an arithmetic number, because the mean of its divisors is an integer number (337196196256).

Almost surely, 2^{6840534863827} is an apocalyptic number.

6840534863827 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

6840534863827 is a deficient number, since it is larger than the sum of its proper divisors (1252173846317).

6840534863827 is a wasteful number, since it uses less digits than its factorization.

6840534863827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279055 (or 4279048 counting only the distinct ones).

The product of its (nonzero) digits is 185794560, while the sum is 64.

The spelling of 6840534863827 in words is "six trillion, eight hundred forty billion, five hundred thirty-four million, eight hundred sixty-three thousand, eight hundred twenty-seven".