12545127918161 has 4 divisors (see below), whose sum is σ = 12565394684400. Its totient is φ = 12524861151924.

The previous prime is 12545127918077. The next prime is 12545127918163. The reversal of 12545127918161 is 16181972154521.

12545127918161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 12545127918161 - 2²⁶ = 12545060809297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12545127918163) 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, 10133382191 + ... + 10133383428.

It is an arithmetic number, because the mean of its divisors is an integer number (3141348671100).

Almost surely, 2^{12545127918161} is an apocalyptic number.

It is an amenable number.

12545127918161 is a deficient number, since it is larger than the sum of its proper divisors (20266766239).

12545127918161 is an equidigital number, since it uses as much as digits as its factorization.

12545127918161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20266766238.

The product of its digits is 1209600, while the sum is 53.

The spelling of 12545127918161 in words is "twelve trillion, five hundred forty-five billion, one hundred twenty-seven million, nine hundred eighteen thousand, one hundred sixty-one".