27243795543 has 16 divisors (see below), whose sum is σ = 36551387136. Its totient is φ = 18049556160.

The previous prime is 27243795521. The next prime is 27243795613. The reversal of 27243795543 is 34559734272.

It is not a de Polignac number, because 27243795543 - 2⁵ = 27243795511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27243775543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568896 + ... + 614922.

It is an arithmetic number, because the mean of its divisors is an integer number (2284461696).

Almost surely, 2^27243795543 is an apocalyptic number.

27243795543 is a deficient number, since it is larger than the sum of its proper divisors (9307591593).

27243795543 is a wasteful number, since it uses less digits than its factorization.

27243795543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47254.

The product of its digits is 6350400, while the sum is 51.

The spelling of 27243795543 in words is "twenty-seven billion, two hundred forty-three million, seven hundred ninety-five thousand, five hundred forty-three".