12445193161 has 4 divisors (see below), whose sum is σ = 12445665232. Its totient is φ = 12444721092.

The previous prime is 12445193147. The next prime is 12445193203. The reversal of 12445193161 is 16139154421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16139154421 = 13 ⋅1241473417.

It is a cyclic number.

It is not a de Polignac number, because 12445193161 - 2⁵ = 12445193129 is a prime.

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 12445193161.

It is not an unprimeable number, because it can be changed into a prime (12445197161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193995 + ... + 250048.

It is an arithmetic number, because the mean of its divisors is an integer number (3111416308).

Almost surely, 2^12445193161 is an apocalyptic number.

It is an amenable number.

12445193161 is a deficient number, since it is larger than the sum of its proper divisors (472071).

12445193161 is an equidigital number, since it uses as much as digits as its factorization.

12445193161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472070.

The product of its digits is 25920, while the sum is 37.

The spelling of 12445193161 in words is "twelve billion, four hundred forty-five million, one hundred ninety-three thousand, one hundred sixty-one".