84216728173875 has 128 divisors (see below), whose sum is σ = 159544909854720. Its totient is φ = 39051700160000.

The previous prime is 84216728173867. The next prime is 84216728173931. The reversal of 84216728173875 is 57837182761248.

It is not a de Polignac number, because 84216728173875 - 2³ = 84216728173867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 742719685 + ... + 742833065.

It is an arithmetic number, because the mean of its divisors is an integer number (1246444608240).

Almost surely, 2^{84216728173875} is an apocalyptic number.

84216728173875 is a deficient number, since it is larger than the sum of its proper divisors (75328181680845).

84216728173875 is a wasteful number, since it uses less digits than its factorization.

84216728173875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121262 (or 121252 counting only the distinct ones).

The product of its digits is 252887040, while the sum is 69.

The spelling of 84216728173875 in words is "eighty-four trillion, two hundred sixteen billion, seven hundred twenty-eight million, one hundred seventy-three thousand, eight hundred seventy-five".