84218512682 has 8 divisors (see below), whose sum is σ = 126393811236. Its totient is φ = 42087242272.

The previous prime is 84218512663. The next prime is 84218512691. The reversal of 84218512682 is 28621581248.

It can be written as a sum of positive squares in 2 ways, for example, as 81549653761 + 2668858921 = 285569^2 + 51661^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11002253 + ... + 11009904.

Almost surely, 2^84218512682 is an apocalyptic number.

84218512682 is a deficient number, since it is larger than the sum of its proper divisors (42175298554).

84218512682 is a wasteful number, since it uses less digits than its factorization.

84218512682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22014072.

The product of its digits is 491520, while the sum is 47.

The spelling of 84218512682 in words is "eighty-four billion, two hundred eighteen million, five hundred twelve thousand, six hundred eighty-two".