6716784138 has 16 divisors (see below), whose sum is σ = 13434425760. Its totient is φ = 2238785136.

The previous prime is 6716784131. The next prime is 6716784143. The reversal of 6716784138 is 8314876176.

It is not an unprimeable number, because it can be changed into a prime (6716784131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115053 + ... + 163311.

It is an arithmetic number, because the mean of its divisors is an integer number (839651610).

Almost surely, 2^6716784138 is an apocalyptic number.

6716784138 is an abundant number, since it is smaller than the sum of its proper divisors (6717641622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6716784138 is a wasteful number, since it uses less digits than its factorization.

6716784138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71461.

The product of its digits is 1354752, while the sum is 51.

The square root of 6716784138 is about 81955.9890306987. The cubic root of 6716784138 is about 1886.7765232070.

The spelling of 6716784138 in words is "six billion, seven hundred sixteen million, seven hundred eighty-four thousand, one hundred thirty-eight".