6782138361 has 12 divisors (see below), whose sum is σ = 9817586688. Its totient is φ = 4511657304.

The previous prime is 6782138353. The next prime is 6782138381. The reversal of 6782138361 is 1638312876.

6782138361 is a `hidden beast` number, since 6 + 78 + 213 + 8 + 361 = 666.

It is not a de Polignac number, because 6782138361 - 2³ = 6782138353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6782138351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809625 + ... + 817958.

It is an arithmetic number, because the mean of its divisors is an integer number (818132224).

Almost surely, 2^6782138361 is an apocalyptic number.

It is an amenable number.

6782138361 is a deficient number, since it is larger than the sum of its proper divisors (3035448327).

6782138361 is a wasteful number, since it uses less digits than its factorization.

6782138361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628052 (or 1628049 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 6782138361 is about 82353.7392047259. The cubic root of 6782138361 is about 1892.8762195295.

The spelling of 6782138361 in words is "six billion, seven hundred eighty-two million, one hundred thirty-eight thousand, three hundred sixty-one".