52185820178 has 18 divisors (see below), whose sum is σ = 78841471527. Its totient is φ = 25906662540.

The previous prime is 52185820133. The next prime is 52185820217. The reversal of 52185820178 is 87102858125.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26092910089 + 26092910089 = 161533^2 + 161533^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=161533.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52659263 + ... + 52660253.

Almost surely, 2^52185820178 is an apocalyptic number.

52185820178 is a deficient number, since it is larger than the sum of its proper divisors (26655651349).

52185820178 is an frugal number, since it uses more digits than its factorization.

52185820178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 47.

The spelling of 52185820178 in words is "fifty-two billion, one hundred eighty-five million, eight hundred twenty thousand, one hundred seventy-eight".