12546673145 has 4 divisors (see below), whose sum is σ = 15056007780. Its totient is φ = 10037338512.

The previous prime is 12546673141. The next prime is 12546673147. The reversal of 12546673145 is 54137664521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4214087056 + 8332586089 = 64916^2 + 91283^2 .

It is a cyclic number.

It is not a de Polignac number, because 12546673145 - 2² = 12546673141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12546673096 and 12546673105.

It is not an unprimeable number, because it can be changed into a prime (12546673141) 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, 1254667310 + ... + 1254667319.

It is an arithmetic number, because the mean of its divisors is an integer number (3764001945).

Almost surely, 2^12546673145 is an apocalyptic number.

It is an amenable number.

12546673145 is a deficient number, since it is larger than the sum of its proper divisors (2509334635).

12546673145 is an equidigital number, since it uses as much as digits as its factorization.

12546673145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509334634.

The product of its digits is 604800, while the sum is 44.

The spelling of 12546673145 in words is "twelve billion, five hundred forty-six million, six hundred seventy-three thousand, one hundred forty-five".