12792690565 has 4 divisors (see below), whose sum is σ = 15351228684. Its totient is φ = 10234152448.

The previous prime is 12792690529. The next prime is 12792690571. The reversal of 12792690565 is 56509629721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56509629721 = 121937 ⋅463433.

It can be written as a sum of positive squares in 2 ways, for example, as 4674320161 + 8118370404 = 68369^2 + 90102^2 .

It is a cyclic number.

It is not a de Polignac number, because 12792690565 - 2⁷ = 12792690437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1279269052 + ... + 1279269061.

It is an arithmetic number, because the mean of its divisors is an integer number (3837807171).

Almost surely, 2^12792690565 is an apocalyptic number.

It is an amenable number.

12792690565 is a deficient number, since it is larger than the sum of its proper divisors (2558538119).

12792690565 is an equidigital number, since it uses as much as digits as its factorization.

12792690565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558538118.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 12792690565 in words is "twelve billion, seven hundred ninety-two million, six hundred ninety thousand, five hundred sixty-five".