133121053165161 has 16 divisors (see below), whose sum is σ = 186838398489600. Its totient is φ = 84075629941008.

The previous prime is 133121053165153. The next prime is 133121053165249. The reversal of 133121053165161 is 161561350121331.

It is not a de Polignac number, because 133121053165161 - 2³ = 133121053165153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133121043165161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5565621 + ... + 17240018.

It is an arithmetic number, because the mean of its divisors is an integer number (11677399905600).

Almost surely, 2^{133121053165161} is an apocalyptic number.

It is an amenable number.

133121053165161 is a deficient number, since it is larger than the sum of its proper divisors (53717345324439).

133121053165161 is a wasteful number, since it uses less digits than its factorization.

133121053165161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22908068.

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 133121053165161 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, fifty-three million, one hundred sixty-five thousand, one hundred sixty-one".