27802442823 has 4 divisors (see below), whose sum is σ = 37069923768. Its totient is φ = 18534961880.

The previous prime is 27802442819. The next prime is 27802442831. The reversal of 27802442823 is 32824420872.

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

It is a cyclic number.

It is not a de Polignac number, because 27802442823 - 2² = 27802442819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27802442123) 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 3 ways as a sum of consecutive naturals, for example, 4633740468 + ... + 4633740473.

It is an arithmetic number, because the mean of its divisors is an integer number (9267480942).

Almost surely, 2^27802442823 is an apocalyptic number.

27802442823 is a deficient number, since it is larger than the sum of its proper divisors (9267480945).

27802442823 is an equidigital number, since it uses as much as digits as its factorization.

27802442823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9267480944.

The product of its (nonzero) digits is 344064, while the sum is 42.

The spelling of 27802442823 in words is "twenty-seven billion, eight hundred two million, four hundred forty-two thousand, eight hundred twenty-three".