27442563447 has 16 divisors (see below), whose sum is σ = 39422200160. Its totient is φ = 16880234112.

The previous prime is 27442563437. The next prime is 27442563451. The reversal of 27442563447 is 74436524472.

It is not a de Polignac number, because 27442563447 - 2¹⁰ = 27442562423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27442563396 and 27442563405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27442563437) 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 15 ways as a sum of consecutive naturals, for example, 66568 + ... + 243549.

It is an arithmetic number, because the mean of its divisors is an integer number (2463887510).

Almost surely, 2^27442563447 is an apocalyptic number.

27442563447 is a deficient number, since it is larger than the sum of its proper divisors (11979636713).

27442563447 is a wasteful number, since it uses less digits than its factorization.

27442563447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312402.

The product of its digits is 4515840, while the sum is 48.

The spelling of 27442563447 in words is "twenty-seven billion, four hundred forty-two million, five hundred sixty-three thousand, four hundred forty-seven".