27982841823 has 20 divisors (see below), whose sum is σ = 44260444800. Its totient is φ = 17557860672.

The previous prime is 27982841813. The next prime is 27982841839. The reversal of 27982841823 is 32814828972.

It is not a de Polignac number, because 27982841823 - 2⁴ = 27982841807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27982841823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27982841813) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10159423 + ... + 10162176.

It is an arithmetic number, because the mean of its divisors is an integer number (2213022240).

Almost surely, 2^27982841823 is an apocalyptic number.

27982841823 is a deficient number, since it is larger than the sum of its proper divisors (16277602977).

27982841823 is a wasteful number, since it uses less digits than its factorization.

27982841823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20321628 (or 20321619 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 27982841823 in words is "twenty-seven billion, nine hundred eighty-two million, eight hundred forty-one thousand, eight hundred twenty-three".