178406343122 has 18 divisors (see below), whose sum is σ = 311308160247. Its totient is φ = 76458069324.

The previous prime is 178406343103. The next prime is 178406343133. The reversal of 178406343122 is 221343604871.

178406343122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 89203171561 + 89203171561 = 298669^2 + 298669^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=298669.

It is a self number, because there is not a number n which added to its sum of digits gives 178406343122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4160033 + ... + 4202699.

Almost surely, 2^178406343122 is an apocalyptic number.

178406343122 is a deficient number, since it is larger than the sum of its proper divisors (132901817125).

178406343122 is an frugal number, since it uses more digits than its factorization.

178406343122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85350 (or 42676 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

Adding to 178406343122 its reverse (221343604871), we get a palindrome (399749947993).

The spelling of 178406343122 in words is "one hundred seventy-eight billion, four hundred six million, three hundred forty-three thousand, one hundred twenty-two".