27653694436 has 81 divisors (see below), whose sum is σ = 52911541179. Its totient is φ = 12643665408.

The previous prime is 27653694413. The next prime is 27653694437. The reversal of 27653694436 is 63449635672.

The square root of 27653694436 is 166294.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3492100836 + 24161593600 = 59094^2 + 155440^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27653694437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 378817696 + ... + 378817768.

Almost surely, 2^27653694436 is an apocalyptic number.

27653694436 is the 166294-th square number.

It is an amenable number.

27653694436 is a deficient number, since it is larger than the sum of its proper divisors (25257846743).

27653694436 is an equidigital number, since it uses as much as digits as its factorization.

27653694436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 159 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 55.

The spelling of 27653694436 in words is "twenty-seven billion, six hundred fifty-three million, six hundred ninety-four thousand, four hundred thirty-six".