168133876128 has 36 divisors (see below), whose sum is σ = 478130711058. Its totient is φ = 56044625280.

The previous prime is 168133876117. The next prime is 168133876151. The reversal of 168133876128 is 821678331861.

It is a happy number.

168133876128 is a `hidden beast` number, since 1 + 6 + 8 + 13 + 3 + 8 + 7 + 612 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139825140624 + 28308735504 = 373932^2 + 168252^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291898803 + ... + 291899378.

Almost surely, 2^168133876128 is an apocalyptic number.

168133876128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

168133876128 is an abundant number, since it is smaller than the sum of its proper divisors (309996834930).

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

168133876128 is a wasteful number, since it uses less digits than its factorization.

168133876128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583798197 (or 583798186 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 168133876128 in words is "one hundred sixty-eight billion, one hundred thirty-three million, eight hundred seventy-six thousand, one hundred twenty-eight".