12195125161 has 8 divisors (see below), whose sum is σ = 12281076104. Its totient is φ = 12109409280.

The previous prime is 12195125143. The next prime is 12195125179. The reversal of 12195125161 is 16152159121.

It is an interprime number because it is at equal distance from previous prime (12195125143) and next prime (12195125179).

It can be written as a sum of positive squares in 4 ways, for example, as 297769536 + 11897355625 = 17256^2 + 109075^2 .

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 12195125161 - 2²⁷ = 12060907433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12195122161) 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, 46015 + ... + 162811.

It is an arithmetic number, because the mean of its divisors is an integer number (1535134513).

Almost surely, 2^12195125161 is an apocalyptic number.

It is an amenable number.

12195125161 is a deficient number, since it is larger than the sum of its proper divisors (85950943).

12195125161 is a wasteful number, since it uses less digits than its factorization.

12195125161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117531.

The product of its digits is 5400, while the sum is 34.

The spelling of 12195125161 in words is "twelve billion, one hundred ninety-five million, one hundred twenty-five thousand, one hundred sixty-one".