84216648564775 has 12 divisors (see below), whose sum is σ = 105129507609000. Its totient is φ = 66921148923680.

The previous prime is 84216648564749. The next prime is 84216648564793. The reversal of 84216648564775 is 57746584661248.

It is not a de Polignac number, because 84216648564775 - 2²⁷ = 84216514347047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84216648564698 and 84216648564707.

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 11 ways as a sum of consecutive naturals, for example, 11304244405 + ... + 11304251854.

It is an arithmetic number, because the mean of its divisors is an integer number (8760792300750).

Almost surely, 2^{84216648564775} is an apocalyptic number.

84216648564775 is a deficient number, since it is larger than the sum of its proper divisors (20912859044225).

84216648564775 is a wasteful number, since it uses less digits than its factorization.

84216648564775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22608496418 (or 22608496413 counting only the distinct ones).

The product of its digits is 2167603200, while the sum is 73.

The spelling of 84216648564775 in words is "eighty-four trillion, two hundred sixteen billion, six hundred forty-eight million, five hundred sixty-four thousand, seven hundred seventy-five".