84155027686678 has 16 divisors (see below), whose sum is σ = 135953266792896. Its totient is φ = 38837773506240.

The previous prime is 84155027686643. The next prime is 84155027686721. The reversal of 84155027686678 is 87668672055148.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 84155027686678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125012151 + ... + 125683522.

It is an arithmetic number, because the mean of its divisors is an integer number (8497079174556).

Almost surely, 2^{84155027686678} is an apocalyptic number.

84155027686678 is a deficient number, since it is larger than the sum of its proper divisors (51798239106218).

84155027686678 is a wasteful number, since it uses less digits than its factorization.

84155027686678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250708599.

The product of its (nonzero) digits is 1083801600, while the sum is 73.

The spelling of 84155027686678 in words is "eighty-four trillion, one hundred fifty-five billion, twenty-seven million, six hundred eighty-six thousand, six hundred seventy-eight".