133159138168 has 24 divisors (see below), whose sum is σ = 290436386400. Its totient is φ = 57068201904.

The previous prime is 133159138163. The next prime is 133159138171. The reversal of 133159138168 is 861831951331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133159138163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 169845448 + ... + 169846231.

It is an arithmetic number, because the mean of its divisors is an integer number (12101516100).

Almost surely, 2^133159138168 is an apocalyptic number.

It is an amenable number.

133159138168 is an abundant number, since it is smaller than the sum of its proper divisors (157277248232).

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

133159138168 is a wasteful number, since it uses less digits than its factorization.

133159138168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339691699 (or 339691688 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The spelling of 133159138168 in words is "one hundred thirty-three billion, one hundred fifty-nine million, one hundred thirty-eight thousand, one hundred sixty-eight".