12878685145 has 8 divisors (see below), whose sum is σ = 15591187656. Its totient is φ = 10211771136.

The previous prime is 12878685109. The next prime is 12878685163. The reversal of 12878685145 is 54158687821.

It can be written as a sum of positive squares in 4 ways, for example, as 139499721 + 12739185424 = 11811^2 + 112868^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12878685145 - 2¹⁵ = 12878652377 is a prime.

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, 11396502 + ... + 11397631.

It is an arithmetic number, because the mean of its divisors is an integer number (1948898457).

Almost surely, 2^12878685145 is an apocalyptic number.

It is an amenable number.

12878685145 is a deficient number, since it is larger than the sum of its proper divisors (2712502511).

12878685145 is a wasteful number, since it uses less digits than its factorization.

12878685145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794251.

The product of its digits is 4300800, while the sum is 55.

The spelling of 12878685145 in words is "twelve billion, eight hundred seventy-eight million, six hundred eighty-five thousand, one hundred forty-five".