27773206823 has 4 divisors (see below), whose sum is σ = 28730903640. Its totient is φ = 26815510008.

The previous prime is 27773206819. The next prime is 27773206829. The reversal of 27773206823 is 32860237772.

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 27773206823 - 2² = 27773206819 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 (27773206829) 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, 478848365 + ... + 478848422.

It is an arithmetic number, because the mean of its divisors is an integer number (7182725910).

Almost surely, 2^27773206823 is an apocalyptic number.

27773206823 is a deficient number, since it is larger than the sum of its proper divisors (957696817).

27773206823 is an equidigital number, since it uses as much as digits as its factorization.

27773206823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957696816.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 27773206823 in words is "twenty-seven billion, seven hundred seventy-three million, two hundred six thousand, eight hundred twenty-three".