27396338565 has 32 divisors (see below), whose sum is σ = 45751392000. Its totient is φ = 13972614656.

The previous prime is 27396338513. The next prime is 27396338591. The reversal of 27396338565 is 56583369372.

It is a cyclic number.

It is not a de Polignac number, because 27396338565 - 2¹⁷ = 27396207493 is a prime.

It is a super-3 number, since 3×27396338565³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1915561 + ... + 1929809.

It is an arithmetic number, because the mean of its divisors is an integer number (1429731000).

Almost surely, 2^27396338565 is an apocalyptic number.

It is an amenable number.

27396338565 is a deficient number, since it is larger than the sum of its proper divisors (18355053435).

27396338565 is a wasteful number, since it uses less digits than its factorization.

27396338565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19853.

The product of its digits is 24494400, while the sum is 57.

The spelling of 27396338565 in words is "twenty-seven billion, three hundred ninety-six million, three hundred thirty-eight thousand, five hundred sixty-five".