12627513865 has 4 divisors (see below), whose sum is σ = 15153016644. Its totient is φ = 10102011088.

The previous prime is 12627513851. The next prime is 12627513893. The reversal of 12627513865 is 56831572621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56831572621 = 13043 ⋅4357247.

It can be written as a sum of positive squares in 2 ways, for example, as 6116960521 + 6510553344 = 78211^2 + 80688^2 .

It is a cyclic number.

It is not a de Polignac number, because 12627513865 - 2⁷ = 12627513737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262751382 + ... + 1262751391.

It is an arithmetic number, because the mean of its divisors is an integer number (3788254161).

Almost surely, 2^12627513865 is an apocalyptic number.

It is an amenable number.

12627513865 is a deficient number, since it is larger than the sum of its proper divisors (2525502779).

12627513865 is an equidigital number, since it uses as much as digits as its factorization.

12627513865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525502778.

The product of its digits is 604800, while the sum is 46.

The spelling of 12627513865 in words is "twelve billion, six hundred twenty-seven million, five hundred thirteen thousand, eight hundred sixty-five".