12945611845 has 8 divisors (see below), whose sum is σ = 15789402360. Its totient is φ = 10186710720.

The previous prime is 12945611827. The next prime is 12945611851. The reversal of 12945611845 is 54811654921.

It can be written as a sum of positive squares in 4 ways, for example, as 1401828481 + 11543783364 = 37441^2 + 107442^2 .

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

It is not a de Polignac number, because 12945611845 - 2⁷ = 12945611717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12945611795 and 12945611804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21222010 + ... + 21222619.

It is an arithmetic number, because the mean of its divisors is an integer number (1973675295).

Almost surely, 2^12945611845 is an apocalyptic number.

It is an amenable number.

12945611845 is a deficient number, since it is larger than the sum of its proper divisors (2843790515).

12945611845 is an equidigital number, since it uses as much as digits as its factorization.

12945611845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42444695.

The product of its digits is 345600, while the sum is 46.

The spelling of 12945611845 in words is "twelve billion, nine hundred forty-five million, six hundred eleven thousand, eight hundred forty-five".