27984092543 has 4 divisors (see below), whose sum is σ = 30528100968. Its totient is φ = 25440084120.

The previous prime is 27984092533. The next prime is 27984092569. The reversal of 27984092543 is 34529048972.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 27984092543 - 2¹⁶ = 27984027007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27984092533) 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, 1272004196 + ... + 1272004217.

It is an arithmetic number, because the mean of its divisors is an integer number (7632025242).

Almost surely, 2^27984092543 is an apocalyptic number.

27984092543 is a deficient number, since it is larger than the sum of its proper divisors (2544008425).

27984092543 is a wasteful number, since it uses less digits than its factorization.

27984092543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544008424.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 27984092543 in words is "twenty-seven billion, nine hundred eighty-four million, ninety-two thousand, five hundred forty-three".