84127842161786 has 8 divisors (see below), whose sum is σ = 126252170986260. Its totient is φ = 42043785166368.

The previous prime is 84127842161651. The next prime is 84127842161791. The reversal of 84127842161786 is 68716124872148.

It can be written as a sum of positive squares in 2 ways, for example, as 73467715111561 + 10660127050225 = 8571331^2 + 3264985^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10067952041 + ... + 10067960396.

Almost surely, 2^{84127842161786} is an apocalyptic number.

84127842161786 is a deficient number, since it is larger than the sum of its proper divisors (42124328824474).

84127842161786 is a wasteful number, since it uses less digits than its factorization.

84127842161786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20135914528.

The product of its digits is 57802752, while the sum is 65.

The spelling of 84127842161786 in words is "eighty-four trillion, one hundred twenty-seven billion, eight hundred forty-two million, one hundred sixty-one thousand, seven hundred eighty-six".