12161405133 has 6 divisors (see below), whose sum is σ = 17566474094. Its totient is φ = 8107603416.

The previous prime is 12161405131. The next prime is 12161405153. The reversal of 12161405133 is 33150416121.

It is a happy number.

12161405133 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 140 + 513 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6152519844 + 6008885289 = 78438^2 + 77517^2 .

It is not a de Polignac number, because 12161405133 - 2¹ = 12161405131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12161405097 and 12161405106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161405131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675633610 + ... + 675633627.

Almost surely, 2^12161405133 is an apocalyptic number.

It is an amenable number.

12161405133 is a deficient number, since it is larger than the sum of its proper divisors (5405068961).

12161405133 is a wasteful number, since it uses less digits than its factorization.

12161405133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351267243 (or 1351267240 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 12161405133 in words is "twelve billion, one hundred sixty-one million, four hundred five thousand, one hundred thirty-three".