12927565691 has 8 divisors (see below), whose sum is σ = 13017763584. Its totient is φ = 12837520360.

The previous prime is 12927565661. The next prime is 12927565699. The reversal of 12927565691 is 19656572921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12927565691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12927565699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134636 + ... + 209718.

It is an arithmetic number, because the mean of its divisors is an integer number (1627220448).

Almost surely, 2^12927565691 is an apocalyptic number.

12927565691 is a deficient number, since it is larger than the sum of its proper divisors (90197893).

12927565691 is a wasteful number, since it uses less digits than its factorization.

12927565691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76281.

The product of its digits is 2041200, while the sum is 53.

The spelling of 12927565691 in words is "twelve billion, nine hundred twenty-seven million, five hundred sixty-five thousand, six hundred ninety-one".