12175145181 has 16 divisors (see below), whose sum is σ = 18051953920. Its totient is φ = 8110147680.

The previous prime is 12175145137. The next prime is 12175145183. The reversal of 12175145181 is 18154157121.

It is a happy number.

12175145181 is a `hidden beast` number, since 1 + 2 + 17 + 514 + 51 + 81 = 666.

It is not a de Polignac number, because 12175145181 - 2⁶ = 12175145117 is a prime.

It is a super-2 number, since 2×12175145181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12175145183) 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, 149920 + ... + 216393.

It is an arithmetic number, because the mean of its divisors is an integer number (1128247120).

Almost surely, 2^12175145181 is an apocalyptic number.

It is an amenable number.

12175145181 is a deficient number, since it is larger than the sum of its proper divisors (5876808739).

12175145181 is a wasteful number, since it uses less digits than its factorization.

12175145181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367553 (or 367547 counting only the distinct ones).

The product of its digits is 11200, while the sum is 36.

The spelling of 12175145181 in words is "twelve billion, one hundred seventy-five million, one hundred forty-five thousand, one hundred eighty-one".