27694804393 has 4 divisors (see below), whose sum is σ = 27695155540. Its totient is φ = 27694453248.

The previous prime is 27694804391. The next prime is 27694804421. The reversal of 27694804393 is 39340849672.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15997949289 + 11696855104 = 126483^2 + 108152^2 .

It is a cyclic number.

It is not a de Polignac number, because 27694804393 - 2¹ = 27694804391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27694804391) 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, 3853 + ... + 235381.

It is an arithmetic number, because the mean of its divisors is an integer number (6923788885).

Almost surely, 2^27694804393 is an apocalyptic number.

It is an amenable number.

27694804393 is a deficient number, since it is larger than the sum of its proper divisors (351147).

27694804393 is a wasteful number, since it uses less digits than its factorization.

27694804393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351146.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 27694804393 in words is "twenty-seven billion, six hundred ninety-four million, eight hundred four thousand, three hundred ninety-three".