12161516171 has 8 divisors (see below), whose sum is σ = 13925455104. Its totient is φ = 10404222120.

The previous prime is 12161516123. The next prime is 12161516201. The reversal of 12161516171 is 17161516121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12161516171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12161516071) 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, 1657295 + ... + 1664616.

It is an arithmetic number, because the mean of its divisors is an integer number (1740681888).

Almost surely, 2^12161516171 is an apocalyptic number.

12161516171 is a deficient number, since it is larger than the sum of its proper divisors (1763938933).

12161516171 is an equidigital number, since it uses as much as digits as its factorization.

12161516171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322441.

The product of its digits is 2520, while the sum is 32.

The spelling of 12161516171 in words is "twelve billion, one hundred sixty-one million, five hundred sixteen thousand, one hundred seventy-one".