12965015827 has 4 divisors (see below), whose sum is σ = 13383242176. Its totient is φ = 12546789480.

The previous prime is 12965015801. The next prime is 12965015831. The reversal of 12965015827 is 72851056921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72851056921 = 7069 ⋅10305709.

It is a cyclic number.

It is not a de Polignac number, because 12965015827 - 2¹⁹ = 12964491539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12965015867) 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, 209113128 + ... + 209113189.

It is an arithmetic number, because the mean of its divisors is an integer number (3345810544).

Almost surely, 2^12965015827 is an apocalyptic number.

12965015827 is a deficient number, since it is larger than the sum of its proper divisors (418226349).

12965015827 is an equidigital number, since it uses as much as digits as its factorization.

12965015827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418226348.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 12965015827 in words is "twelve billion, nine hundred sixty-five million, fifteen thousand, eight hundred twenty-seven".