84544678805265 has 128 divisors (see below), whose sum is σ = 172651915898880. Its totient is φ = 38451783891456.

The previous prime is 84544678805263. The next prime is 84544678805317. The reversal of 84544678805265 is 56250887644548.

It is a happy number.

84544678805265 is a `hidden beast` number, since 8 + 4 + 5 + 446 + 78 + 8 + 0 + 52 + 65 = 666.

It is not a de Polignac number, because 84544678805265 - 2¹ = 84544678805263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84544678805193 and 84544678805202.

It is not an unprimeable number, because it can be changed into a prime (84544678805263) by changing a digit.

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, 154422294 + ... + 154968816.

It is an arithmetic number, because the mean of its divisors is an integer number (1348843092960).

Almost surely, 2^{84544678805265} is an apocalyptic number.

It is an amenable number.

84544678805265 is an abundant number, since it is smaller than the sum of its proper divisors (88107237093615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84544678805265 is a wasteful number, since it uses less digits than its factorization.

84544678805265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547380 (or 547374 counting only the distinct ones).

The product of its (nonzero) digits is 2064384000, while the sum is 72.

The spelling of 84544678805265 in words is "eighty-four trillion, five hundred forty-four billion, six hundred seventy-eight million, eight hundred five thousand, two hundred sixty-five".