27444680693 has 4 divisors (see below), whose sum is σ = 27457430028. Its totient is φ = 27431931360.

The previous prime is 27444680689. The next prime is 27444680713. The reversal of 27444680693 is 39608644472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2467406929 + 24977273764 = 49673^2 + 158042^2 .

It is a cyclic number.

It is not a de Polignac number, because 27444680693 - 2² = 27444680689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27444680623) 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, 6371438 + ... + 6375743.

It is an arithmetic number, because the mean of its divisors is an integer number (6864357507).

Almost surely, 2^27444680693 is an apocalyptic number.

It is an amenable number.

27444680693 is a deficient number, since it is larger than the sum of its proper divisors (12749335).

27444680693 is a wasteful number, since it uses less digits than its factorization.

27444680693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12749334.

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 27444680693 in words is "twenty-seven billion, four hundred forty-four million, six hundred eighty thousand, six hundred ninety-three".