133173162181 has 8 divisors (see below), whose sum is σ = 140210485280. Its totient is φ = 126138660048.

The previous prime is 133173162151. The next prime is 133173162271. The reversal of 133173162181 is 181261371331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133173162181 - 2¹⁵ = 133173129413 is a prime.

It is a super-2 number, since 2×133173162181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133173162181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133173162151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607986 + ... + 797491.

It is an arithmetic number, because the mean of its divisors is an integer number (17526310660).

Almost surely, 2^133173162181 is an apocalyptic number.

It is an amenable number.

133173162181 is a deficient number, since it is larger than the sum of its proper divisors (7037323099).

133173162181 is a wasteful number, since it uses less digits than its factorization.

133173162181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410483.

The product of its digits is 18144, while the sum is 37.

The spelling of 133173162181 in words is "one hundred thirty-three billion, one hundred seventy-three million, one hundred sixty-two thousand, one hundred eighty-one".