178968282642 has 18 divisors (see below), whose sum is σ = 387768501237. Its totient is φ = 59655495936.

The previous prime is 178968282611. The next prime is 178968282667. The reversal of 178968282642 is 246282869871.

It can be written as a sum of positive squares in 2 ways, for example, as 160272916281 + 18695366361 = 400341^2 + 136731^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=299139.

It is a self number, because there is not a number n which added to its sum of digits gives 178968282642.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1744978 + ... + 1844690.

Almost surely, 2^178968282642 is an apocalyptic number.

178968282642 is an abundant number, since it is smaller than the sum of its proper divisors (208800218595).

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

178968282642 is an frugal number, since it uses more digits than its factorization.

178968282642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199434 (or 99718 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 178968282642 in words is "one hundred seventy-eight billion, nine hundred sixty-eight million, two hundred eighty-two thousand, six hundred forty-two".