27693361849 has 4 divisors (see below), whose sum is σ = 27738539236. Its totient is φ = 27648184464.

The previous prime is 27693361847. The next prime is 27693361889. The reversal of 27693361849 is 94816339672.

It is a happy number.

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 5432721849 + 22260640000 = 73707^2 + 149200^2 .

It is a cyclic number.

It is not a de Polignac number, because 27693361849 - 2¹ = 27693361847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27693361793 and 27693361802.

It is not an unprimeable number, because it can be changed into a prime (27693361847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22587774 + ... + 22588999.

It is an arithmetic number, because the mean of its divisors is an integer number (6934634809).

Almost surely, 2^27693361849 is an apocalyptic number.

It is an amenable number.

27693361849 is a deficient number, since it is larger than the sum of its proper divisors (45177387).

27693361849 is an equidigital number, since it uses as much as digits as its factorization.

27693361849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45177386.

The product of its digits is 11757312, while the sum is 58.

The spelling of 27693361849 in words is "twenty-seven billion, six hundred ninety-three million, three hundred sixty-one thousand, eight hundred forty-nine".