168574478056 has 16 divisors (see below), whose sum is σ = 334669919940. Its totient is φ = 79329166080.

The previous prime is 168574478053. The next prime is 168574478077. The reversal of 168574478056 is 650874475861.

168574478056 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 2 ways, for example, as 139390222500 + 29184255556 = 373350^2 + 170834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168574477985 and 168574478003.

It is not an unprimeable number, because it can be changed into a prime (168574478053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619758975 + ... + 619759246.

Almost surely, 2^168574478056 is an apocalyptic number.

It is an amenable number.

168574478056 is a deficient number, since it is larger than the sum of its proper divisors (166095441884).

168574478056 is a wasteful number, since it uses less digits than its factorization.

168574478056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239518244 (or 1239518240 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 168574478056 in words is "one hundred sixty-eight billion, five hundred seventy-four million, four hundred seventy-eight thousand, fifty-six".